Archive for the 'PC Security' Category

Step Five: Should You Have a Firewall

Monday, October 22nd, 2007

The internet is littered with evil intentions and malicious - albeit smart and brilliant – plotters. They are constantly in the prowl for innocent, unprotected computers. Internet hackers use all sorts of codes such as viruses, worms, and Trojans, to crack into and ruin your computer. You must therefore be prepared to block them off from ever entering your computer’s system at all times.

It is often said that the best cure is prevention. And the saying applies to your computers. If you want to protect your computer from the threat of viruses, worms, Trojans, and other malicious code, one of the best options to take is setting up a firewall.

What is a Firewall?

Imagine a firewall to be the fence that sits between your computer and the internet, or between your computer network and all the other computer networks out there.

It serves as a defense mechanism against harmful codes or data that may destroy your computer, and it works by examining the information that attempts to enter your computer or your network.

When a firewall is set up properly, hackers will not be able to detect your computer in their search for vulnerable ones to victimize.

What are the Types of Firewalls?

Firewalls are generally divided into three categories: software firewalls, hardware routers, and wireless routers. To know which kind of firewall is suitable for your needs, there are two factors on which your decision should depend on:

1. The number of computers that your firewall will service

2. The kind of operating system that you use (it can be Linux, a version of Windows, Apple Macintosh, and so on).

Choosing a Software Firewall

If you are planning to set up a firewall for a single computer, it is ideal to use a software firewall. It also works well with most Windows operating systems. They are readily available from software development companies for a certain fee.

Some of the advantages of a software firewall include:

- No additional hardware is required for it to work
- There is no additional wiring that needs to be installed for the software to work.

However, there are also some disadvantages to deciding on using a software firewall:

- A software firewall may cause money and can be a bit costly
- You will need to install and configure the software to get it to work properly
- If you have multiple computers, you will need to install the software on each one of them to get them protected.

Choosing a Hardware Router

If you are planning to protect a small network of computers, say in your home or at a small office, a hardware router is probably more ideal for you.

The main advantage of using a hardware router is that they are more convenient to use for multiple computers as they usually have at least four network ports to which you can connect a number of computers.

However, its major disadvantage is that because of all the wiring that you will have to setup for it to work, it will potentially clutters your work space.

Choosing a Wireless Router

If you want a wireless network of computers, you would definitely want it protected by a wireless router.

Some advantages of using a wireless router include

- No wiring will be required, so it avoids clutter. It can connect personal computers, printers, scanners, without the use of any physical wiring.
- It is ideal if you want to protect a set of laptops, notebook computers, and desktop computers

Some of the disadvantages of using a wireless router include:

- The radio signals that wireless devices use (including wireless routers) can be intercepted by other individuals with the right equipment
- Wireless routers are not always equipped with a built-in firewall, so you might have to purchase a firewall separately
- You might have to purchase extra equipment to set up a wireless router

Operating systems such as Microsoft Windows XP and Microsoft Vista are already equipped with a built-in firewall, but older versions of Windows as well as other operating systems require that you set up a separate firewall.

Setting up a firewall is recommended to any computer owner, especially to those who have very important data stored in their computers. Often the question lies not on whether you need a firewall or not, but instead on which type of firewall you should set up.

Be updated with current and future security threats now

Monday, October 22nd, 2007

The internet and e-mail is an amazing resource and medium where everyone and everybody utilizes to communicate with each other.

Unfortunately, it is also being used for malicious activities such as scammers that use the e-mail to get money from computer users.

Fortunately, there is an easy way to recognize any attempts of scamming that arrive through e-mail.

Knowledge is power and the descriptions indicated below are three of the email scams currently being used by scrupulous individuals. Stay informed and read on.

Scams via phisher

How this e-mail scam works is through this: usually, you will receive an e-mail from a service online provider or through a bank that ill ask you to go click a specific link or visit a particular website and from there you will be elicited to provide your personal info.

This type of scam is called phishing.

Basically, this scam is where victims are asked and tricked to entering all their personal info like passwords, account numbers to an organization or company that presents itself as legitimate.

This trick is done by ingenious scammers who create a site that looks a lot like the original and authentic web site.

E-mails are usually used to invite and bait potential online victims to go to the fake website.

As much as possible, always be cautious and wary of e-mails that ask you to click a link and give out personal sensitive info like bank details.

You should know that any info provided on these fake sites are farmed and harvested by scammers which they in turn use to steal the funds from the user’s bank account or steal the identity of the victim.

Be aware that companies that are legitimate would never ask for any sensitive info through e-mail.

Never, ever click on these e-mail links. Never and do not give out any info about you. If there are doubts on the veracity of the e-mail, it is always best to directly contact the legitimate company.

How to know a scam if you see one

Generally, a scam has the following characteristics. It makes the promise to give you lots of money, lots of prizes or a job.

It also asks you for donations. It also proposes business deals that are lucrative. It also asks that you provide personal and very sensitive info. It also asks that you follow a specific link to a particular website and log in to a particular account.

Educating yourself is an essential contribution against being vulnerable to fraud as well as any virus or security threat.

The worm

Just this year, a worm that has the ability to e-mail itself in massive amounts target users of Yahoo Mail by arriving in inboxes with a subject that says: New site, along with it an attached forwarded message.

The worm was written using JavaScript and allows embedded scripts written in html to automatically run in the browsers of users.

Basically what this worm does is fool unknowing e-mail recipients to believe that they have received an online card and to click on a particular web link to access it.

However, once clicked, a Trojan is immediately downloaded to the user’s computer and is disguised as am html file thus innocently appearing as a web site page.

Receiving any e-mail that is similar to this should not let you be fooled. As much as possible, do not in any way follow these links in an e-mail message especially if you are not sure that it would lead you to a greeting card web site.

As much as possible, check the site’s true destination prior to clicking it. It would help if you course your mouse over the link and thru doing so immediately see the file extension.

All in all, staying informed is one way to harness power thru knowledge of current trends and updates on potential security and online threats.

This allows ample time for anyone to prepare their system and thereby prevent unnecessary crashes and problems brought about by malicious and threatening viruses, worms or scams.

Believe it or not, luck has little to do with this. The meeting of opportunity and preparation does much to make safe computing a reality that is possible and livable, now.

What’s out, what’s in in instant messaging

Sunday, October 21st, 2007

Believe it or not, instant messaging services are now just as susceptible to viruses and other scammers.

Since almost anyone and everyone has access to e-mail, viruses now have the ability to infiltrate both your office and home as this popular form of communication is being used by virus writers to spread electronic worms and viruses.

According to a study conducted way back in 2003 by the Internet Security of Semantec, viruses and worms that were spread using instant messaging services have increased to 400%.

The instant messaging worms

Currently, the worms Bizex and Jitux.A are now targeting the instant messaging services of MSN as well as ICQ.

The worm Jitux.A is currently spread by infiltrating the contacts of a particular user’s IM. However, the Bizex worm has an intent that is more malicious, it sends a user a link to a particular web site that have already scanned the computer you are using for any electronic finances or payments.

Since it was discovered, the site has since been shutdown, however it is yet to be known the quantity of data they have already collected, albeit maliciously.

Do not be complacent

Though the major virus threats have already been discovered, this is no time to be complacent. Threats could still continue. As more users know better on how to stop traditional virus attacks, writers of viruses will continually look for other targets.

This is according to CyberScrub president, Bill Adler. And the soft target are currently instant messaging services.

Yet do not panic

Relax, this is still no reason for you to throw away your instant messaging service. Be aware that many viruses in IMs do not automatically propagate.

Usually, clicking a link or downloading an applet is hat would require to download a virus or a worm.

Avoiding these threats require that users constantly be vigilant and always do safe computing.

Do not trust friends

Or at least those messages sent by friends. Unbeknownst to your friend, he could be sending you a link that would lead you to a particular site (under the guise that it was supposed to be a picture of someone you both know) which would get you to download a software. When actually, it is a Trojan horse that would automatically install spyware and adware on your PC and easily distribute itself.

It s during these moments that an anti-virus software would be a big help.

Another thing that should not be trusted are games, one such example is a game called Osama Found that is spread via instant messaging.

It is spread via instant messaging via a link inviting users to download the game wherein the idea is to pretend that one is catching Bin Laden.

Those who clicked downloaded the game and BuddyLinks which were able to grab all the user’s contacts in IM and sent the same message link to everyone.

A lot of software could help

Thankfully, there are security and anti-virus software that could extend the coverage protection of instant messaging services.

Zone Labs, for instance, has released IMSecure. It is a program that makes it possible to encrypt messages as well as block hazardous and dangerous URLs.

The anti-virus software of Norton by Symantec has in its feature the scanning of instant messages as well as McAfee. These software programs are able to remove different viruses from any files that were received through instant messaging.

The good thing about the mentioned software is that it works. Based on the tests conducted by PC World, a lot of anti-virus software have been able to catch known worms and viruses that were sent via instant messaging.

However, it is also a fact that there is really no defined anti-virus software program that could one hundred percent prevent all known attacks from viruses or worms.

Vigilance is always the most excellent defense.

All in all, one way to prevent threats from worms and viruses is by not putting your whole trust to any content that you receive from the internet especially through instant messaging.

Prevention is always better than a pound of cure. Being wary of any files sent through IM is not being paranoid, it is being safe rather than sorry later on.

Step Eight – Beware of Opening eMail Attachments – the Danger of Unknown Packages

Sunday, October 21st, 2007

Among the most popular and useful functions of the internet is email. Not only could people send messages to practically anyone all over the world, they can also send digital files such as pictures, sounds, and programs. However, much caution must be taken when opening such attachments because the internet is teeming with malicious minds that craft ways of inconveniencing people, or even getting something of value from them.

What are the dangers of opening email attachments without caution?

While a lot of email attachments, especially those that come from your contacts, may typically just contain innocent stuff such as pictures of your friends, the latest music from your favorite band, or spreadsheet reports from your colleagues, email attachments may also come with things that could damage your computer. Among such things are viruses and spyware.

Every day, people in the online community discover new viruses, worms, and Trojans – software packets that are designed by malicious hackers to do damage to your computer. These programs usually attach themselves to unknown files that are sent to your inbox, and when you open them, you are often unaware that you are already triggering some damage to your unit. Sometimes, seemingly innocent files come up and since they seem so harmless, you just go on and open them without worry, but a lot of such seemingly safe files can actually be very damaging.

Why do people do such a thing?

Some hackers make viruses just for the heck of it o just for laughs. Such hackers just want to prove to the world how good (or rather bad) they are about the computer. But some hackers have more motives other than making pranks. There are hackers that are out there to get something from you that they can use for criminal activities.

A lot of viruses that are distributed through email typically get access to the infected computer’s list of contacts or address book to look for email addresses to which it can distribute itself to. There are viruses that can even forge your name and appear as if that you are the one sending it to your contacts. By doing this, it can replicate and spread itself all over the world to do its damage.

There are also viruses that get vital information from your computer which its creators may use for themselves. Critical data such as your credit card number, social security, and addresses, among many others may be maliciously obtained and used for crimes such as fraud or identity theft. While most of the viruses would not automatically retrieve this from your computer, they could lead you to give the information yourself, without you knowing that you are actually falling prey to those cunning malicious minds.

But are people not protected by security systems and antivirus programs?

Indeed you may get a certain level of protection from firewalls and antivirus programs, you may even get a very good level of security. However, multitudes of viruses are created each day, and there is not telling if what you receive is the latest one. Your computer might be equipped to fend of millions of viruses that have infected people in the previous days, but when you catch a new virus, the chances that your program may be able to fight it could be pretty slim.

What should then be done with such danger lurking in emails?

The most that you can do is to be cautions about your online activities, particularly when opening file attachments to the email you receive. Be very cautious when you are opening email attachments, particularly for computers that are using Microsoft Windows, because such computers are what most viruses target.

Before opening an email attachment, be sure that it comes from a trusted source. However, do not be too complacent about opening attachments from friends and colleagues because as said earlier, viruses may mimic your contact’s information to make it appear that these attachments come from them.

Do not open file attachments that you did not expect to receive. If you get an unexpected email with an attachment from one of your contacts, ask them if they did send something and what is inside that file. Avoid opening attachments with file extensions such as .cmd .scr. .pif .bat and .exe, because such files are the easiest for viruses to attach to.

You can never be too careful in such an open channel as the internet. As the old people would say, it is always better to be safe than sorry.

Safety First When Downloading and Installing Programs

Saturday, October 20th, 2007

Not only people can get virus. Even computers can get those annoying buggers. Do you want your PC or MAC to crash just because you were careless enough to let one small virus eat up its way around your files?

Most computer viruses come from the countless programs the World Wide Web offers. Each one of them is appealing and tempting for the modern-day consumer. However, a smart consumer knows that before buying (some require credit card payments) or downloading a program, a thorough research must have been conducted beforehand.

Some say that searching for the appropriate programs for your system is very much like searching for the right appliances for your home. That is not exactly the case. The former is more complicated than the latter.

With appliances, there is an assurance of what the product does. Also, there is a warranty. Once, the appliance you bought is not functioning as much as you would want it to, you can always have it replaced or get your money back.

Whereas with programs, you have no idea what the CD can do to your system the minute you put it in. There will always be side effects so how do you gauge the possible risks involved?

The reason why you are resorting to a program is because your computer has needs which you want to satisfy. Nonetheless, some programs cause changes into your system the minute they are installed. You have to figure these out all on your own.

Here are some tips you can apply when buying programs:

1. You must know as much as you can about the program before you download or install this into your computer. The free program offers may be quite inviting but you must be updated on the possible changes it can contribute into your system once you have installed it.

2. There must be a refund/return policy. Do understand these important terms just in case the program you bought does not meet your expectations and standards.

3. Buy from a local store with a credible reputation. Read up on the best place where you could get the program that you need.

Moving on to another situation, what about those programs that can easily be downloaded from the web? How would you know whether these are worth installing into your system? Sometimes, these programs are virus-carriers because of their easy access.

That being the case, these steps can help you determine whether it is worth downloading and installing or not:

1. Ask yourself this: what does the program do? The webpage (when you’re downloading it online) or the CD-Rom (when you’re installing it on your computer) must clearly state the exact description of the program for the customer’s benefit. Learn as much as you can but you must also take into consideration the credibility of the author.

2. Ask yourself whether you are okay with the changes that will occur in your system upon installation of the program.

3. If the author is stated on the webpage or on the CD Rom, the better. In that case, you can contact him via email or telephone and ask about the program first-hand.

4. Testimonials from previous customers are also good information you can rely on when researching on the program. Naturally, they would have experienced what you eventually would.

Some customers go with their instincts. Regardless, they are careful enough to back-up the important files and folders from their systems just in case the program creates a problem and their computers go awry.

There are programs which help you prevent the virus from entering into your system in the first place. It is best that you have this in your computer. But you must also note that there are situations wherein the computer will not be able to instantly recognize a virus.

For example, you clicked open a forwarded message in your inbox containing a virus. Now your computer had a hard time detecting this virus. You may have an anti-virus program installed into your system but these situations still do happen.

In the end, you must always rely on you. Read up on the program you want to install or download. Check on the credibility of the information stated on the webpage or the CD Rom. Contact the author if you can to verify the statements. And always back-up!

Preventing Password Hackers

Saturday, October 20th, 2007

PC security and safety is always an issue nowadays thanks to the advent of computer technology and the Internet. More computer intruders are boldly coming forward and are looking for ways to attack helpless computer users with valuable information stored in their PCs. Intruders are getting their hands on the latest security measures brought out by various developers and are looking for ways to get through them.

Anti-virus software developers are doing their best to ensure every computer user’s safety and security from potential attacks by always updating their virus definitions and cleaning capabilities, as well as strengthening your firewalls. Sometimes however, it is not enough as intruders can be one or more steps ahead. They use various means of attacking computers so it is sometimes hard to tell what they’re going to do next.

One of the ways is hacking in order to retrieve your password. Think of the many things they can do once they get your passwords – they can access any online accounts you may have, access your email to send and retrieve messages from your address, enter secure networks – the possibilities seem to be limitless. In order to prevent these things from happening, you should have password protection.

The first thing you should do is secure your files and folders by using any password protection software, especially your highly important files and folders which could be potential targets of intruders. If these files are left unprotected, it would be easier for these intruders to get a hold of them and do what they want. Aside from that, other users of your computer (example – your kids) can accidentally move them or even delete them, which can be prevented by password protection.

Hackers and intruders would have an easier time figuring passwords out if they remain the same for a long period of time. It would be better for you if you change passwords regularly, especially for your more important data, for added security. By doing so, the intruders would have to start over again since you have a new password, thus making the possibility of frustrating them greater.

It would also be harder for hackers to figure out your password if you use a number of different characters, especially if it is a combination of letters, numbers, and symbols found in your keyboard. Of course, it will be harder for you to remember a combination of these three also, so you have to make sure to memorize the combination, more so if you regularly change passwords.

A useful tip: it is recommended not to use passwords that are codes like your birth date, spouse’s name, or other relevant information because it can make deducing your password quicker and easier. These “coded” passwords are often used by a lot of people, particularly in ATM machines and email passwords. By doing this, you are more susceptible to attacks since the password is easier to figure out.

Aside from following these tips which you can do on your own, it would be to your benefit if you obtain a password encryption software. The meaning of encryption is that it disguises the password written in cleartext format into ciphertext, which is a combination of different symbols. Decryption is what the intruders try to do, which is change the ciphertext into cleartext that they can see and understand.

A password encryption software, which is available in the Internet via online purchasing or in your computer software shop, encrypts your passwords in order to discourage intruders and prevent them from accessing your password protected files. Various software come with various levels of security, some of which contain a higher level of encryption than others. Higher encryption levels would make it more difficult for the intruder to break in.

Your PC safety and security is not limited to anti-virus software, anti-spyware software, and firewalls, because the passwords themselves can be targeted by unauthorized people. It would be better for your overall security if you take the necessary precautions and means when it comes to dealing with password protection. Securing your important files and folders with passwords, changing them regularly, using a combination of characters, and encrypting them through a password encryption software, would ensure your safety from password hackers.

Ensuring the Safety and Security of Your Home Computer

Thursday, October 11th, 2007

With the popularity of and the reliance on the Internet by almost the whole world’s population, there are suddenly a lot of things you can do and know with literally one click of the mouse. Making purchases nowadays doesn’t require you to go to the shop or store; you can buy items online. Researching for various pieces of information can now be accomplished via the Internet.

However, there is an unfortunate reality that goes along with the wonders of the Internet. It also thanks to the Internet that computer security is always an issue. With the continued growing of the reliance of people (including businessmen, offices, government officials, and more) on computers and the Internet, this is a more important issue than what most believe.

If you are a home computer user, you still need to make sure that your computer is safe from any form of malicious online attack, including hacking. You might have important data (including any identification) in your computer which intruders can have unwanted access to. That being said, it is important for you to find out just how safe your computer is from these potential attacks.

The very first step before actually tinkering with your computer is finding out the motive of intruders and why they target home computer users. They do this because (1) home computer users typically don’t have security measures installed to counter them, which makes them easy targets; and (2) they often have valuable information stored that is enough to entice these intruders, such as credit card information. Think about it – you might potentially be a target.

Following that, you have to know what types of attack to expect – it is usually via email or clicking an ad-banner on a website. Opening an unknown, seemingly innocent email or clicking on an ad-banner will sometimes put you at unwanted risk and open the door for intruders. Once they’re in, they’re sometimes hard to get rid of, so your home computer security should start with you being careful about the things you do while connected to the Internet.

Being careful doesn’t mean just choosing which emails to open or not, and which ad-banners to click to or not. This also includes sending valuable information over the Internet, which is at risk for interception by a third party. It would be better to transmit really important information the old-fashioned way, unless you are very much confident in your security measures.

Next would be trying to place security measures in your computer itself. If your operating system is Microsoft Windows, they offer security updates and malicious software removal tools every month which would be extremely helpful to you – the same goes for other operating systems such as Apple OS and LINUX. There are monthly updates because the intruders always try to find a way to get around these security measures.

After getting the free security updates of your operating system, you would need to get an anti-virus program, preferably one that has the greatest number of virus definitions (you might need to purchase this). Viruses, aside from causing chaos to your computer, can also be used to retrieve information from you and spread out to attack other computers. By obtaining a high-quality anti-virus program, viruses would not be as much of a problem.

Since intruders know the capabilities of anti-virus programs, they sometimes choose to use what is known as spyware, which are little bits of data that can either be annoying or potentially dangerous. Aside from being able to slow down your computer processes, it can also be used to retrieve data from you. To combat this, there are anti-spyware programs available, both freeware and via purchase.

The final security measure is a firewall. Normally, anti-virus programs offer firewalls, so acquiring one should not be much of a problem. A firewall acts like a security guard – it disallows outright entry to anything trying to access your computer (even if it is a program), without asking for your confirmation.

If you do not have these as your PC security and safety measures, you might be highly susceptible to an attack from intruders, if they haven’t done so already. These measures ensure you that your computer and the data inside of it are safe and secure.

Computer Viruses and Guarding Against Them

Thursday, October 11th, 2007

In this modern Information Age, computers are necessities in life. Whether we use them for simple functions such as typing our homework and business reports, up to more important acts like online business meetings and transactions, one cannot deny that computers are a big part in our daily lives. Using a computer, particularly the Internet, is one task that even a ten year old can do at this particular period in time.

With the growing increase of popularity and reliance on computers, as well as the demand for it, security risks have also gone up, which is a reality that cannot be ignored. With the billions of information bits being spread across the World Wide Web, hackers and computer intruders (criminals) see the value in focusing their attention to computers and the Internet. The information they would retrieve here is (more often than not) more useful than when doing it the old-fashioned way.

As such, these intruders have devised some methods into getting information out of computer users, with or without these people knowing that they’ve been hacked into. As is the case in real life, there are some computer programs that are disguised to be innocent, but actually act as spies, providing information to the intruders. These malicious programs which are security threats are called computer viruses.

Computer viruses should not be taken lightly. They work in many different ways; one of them may be to provide data to the one who planted the virus. Other viruses can simply be annoying - slowing down your computer, building unwanted files, etc. – while some can be very disruptive, such as deleting your hard drive, compromising your operating system, etc.

As such, there are different types of viruses which normally differ in how they function and how they are spread. Examples of these include Trojan horses, worms, email viruses, and logic bombs. It would be important for you to know these kinds of viruses in order to better protect you from them, as well as to have the proper programs to get rid of them.

Trojan horses are simply computer program that cannot reproduce themselves, but can do damage anywhere from minimal to extremely dangerous. It usually disguises itself as a common file (maybe an .mp3 music file or a .jpeg picture file) but does the damage when the computer user opens it. This is why you should take extra care when opening a suspicious looking file – it could very well be a Trojan horse.

Worms are self reproducing programs that mainly use security holes in order to spread itself throughout the network. If your computer is infected with a worm and is able to replicate itself a number of times, this usually causes your computer to slow down noticeably since it uses your computer resources and memory to do so. They often use security flaws in operating systems (such as Windows) in order to self reproduce.

Email viruses are self explanatory – they spread via email. Once a user opens the infected email, what it usually does is send itself to other computer users via the email addresses found in the user’s address book. Because it uses email and a lot of people open emails without really checking or being careful, it spreads very quickly across the entire world and can cause chaos within just a few days.

Logic bombs are viruses that target specific computer applications, causing them to crash (for example, Windows). This can also be spread via email attachments or by innocently downloading it off the Internet. It can cause a great deal of harm (particularly if it infects Windows and the like), or just a small amount (small program).

Fortunately for computer users, there are anti-virus programs available anywhere, whether in the Internet or at the computer shop. These programs specifically target over thousands of viruses and wipe them clean from your system (if infected) or protect you from incoming attacks (if not yet infected).

Anti-virus programs are constantly updated (normally everyday) since there are always new virus definitions each day, and you can get infected by these new viruses. These software developers are always researching about the newest viruses to ensure you, the user, are protected from these viruses as much as possible. Your PC security and safety are always being considered.

Hello world!

Tuesday, October 9th, 2007

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What to Do if Your PC is Infected — Simplified Steps Guaranteed

Sunday, January 28th, 2007

Infection can be a life-threatening event, whether in humans or with personal computers.

Since the onset of information technology, the existence of personal computers has long been the subject of many innovative programs that will protect the PC from becoming infected with dangerous and malicious programs.

For some people, their PC’s health is so important that they employ the best and the most effective programs that will help their PCs combat virtual infections.

Getting your PC infected is the worst thing that could ever happen to you and your PC. The effects can be maddening and devastating.

Just seeing your PCs performance wane with frequent crashes on the loose is definitely a nightmare. But the problem is that it is one of those truths that you have to deal with.

Therefore, if your PC is infected, the only thing that you can do is to solve the problem immediately and pray that your PC’s health will be recovered.

Here are some pointers that will teach you what to do if your PC is infected.

1. Update your PC security tools and scan your system

If you are experiencing any decline on your PC’s performance or if you cannot open a file that you have previously accessed without difficulty, it is time that you run your PC security tools and scan your computer.

PC security tools includes anti-spyware, malicious software elimination program, or any other programs that will help you and your computer identify and eradicate Trojan horses, spyware, malaware, etc.

Make sure that your PC security tools are frequently updated with the latest versions and definitions to ensure optimum performance.

2. Contact your anti-virus website for further help

If you were not able to detect any problem but still suspects that something is definitely wrong, it is best that you contact your anti-virus’ website to get more help.

3. Back up files

Before you do anything drastic, such as restoring your PC to its default state, it is best that you create backup files. It is best to focus only on files that you cannot live without, such as your resume, your precious moments, or your thesis and reports.

It is highly recommended that you have a hardcopy on these files or you can create backup files on restore point so that you can easily retrieve them once everything returns to normal.

Getting your PC infected with viruses and other malicious programs can be maddening but with the most innovative PC security tools installed, you can, at least, hope for the best.

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