SIGNS THAT YOUR COMPUTER IS INFECTED WITH VIRUS

It spies on you in secret, pumps your computer's resources, destroys your files or bombards you with advertisements: the computer virus installs itself without your knowledge and sometimes lurks for years before being discovered. However, certain signs can put you off flea in the ear.

1. Your computer is idling

A computer that suddenly becomes particularly slow may have been infected with a virus. But this is not sufficient proof. Today, many applications are very resource intensive. Internet browsers or antiviruses are therefore among the most consuming programs. An overfilled hard drive or an out-of-date system will also cause slowdowns.

Signs that your computer is infected with virus
2. Your screen is invaded by “pop-up” windows when you are surfing the internet.

If you are bombarded with adware popping up on your screen (pop-up), you are probably the victim of adware, an abusive adware. This type of malware is activated when you click on a link containing a piece of code. Subsequently, internet browsing is transformed into a veritable fireworks display of pop-up advertising. More insidious, some adware sometimes automatically redirects normal internet pages like Google.fr to merchant sites.

3. The mouse moves on the screen by itself

If the little arrow is moving on the screen when you have not touched the mouse, it is a very bad sign: It means that a hacker has infiltrated the computer and has taken control. Usually, however, the hacker manages to make the infiltration more covert, by grabbing the webcam, listening through the microphone, or recording anything you type on the keyboard.

4. Applications close unexpectedly

Do your apps crash for no reason or the screen freezes blue while watching a video? It may be the work of malware (malicious software). However, these malfunctions are also often linked to a technical problem, if for example you have mistakenly deleted a register from your computer allowing the program to run correctly, or if the application update is no longer compatible with your computer operating system.

5. Your friends receive emails from you that you never sent

If your friends are receiving messages sent from your email address or social media messages from your profile, your email has been hacked. In this case, you are strongly advised to change the password for your e-mail and all the services to which the e-mail address concerned is associated.

6. You cannot edit or save a file

An error message such as cannot save the document because it has been modified or moved appears when you want to close it. Variant: a message indicates that you do not have the necessary authorization to access your file. In either case, malware likely accessed the file without your knowledge. To check it, you just have to right click on the file, go to > Read information and check when it was modified or opened the last time.

7. The computer is overheating

You should be worried about a computer with a 24-hour fan that is heating up abnormally. First of all because it damages the components, which are very sensitive to heat, but also because it is often a sign that malware is draining all the resources of your computer. "In this case, it is sometimes about hackers who mobilize computing resources from outside to undermine cryptocurrency for their benefit.

8. Unknown extensions have been added to the internet browser

Some malware unwittingly installs web extensions that will collect your data to resell it for targeting advertising, or disrupt your internet browsing. Unfortunately, this type of mishap sometimes occurs with extensions that you downloaded yourself, but which are poorly secured, making it easier for a virus to intrude into the computer. As a precaution, uninstall any applications that are not from a trusted software vendor.

9. A recurring error message tells you that your antivirus is disabled

It's a shame: some malware is able to disable antivirus software, so that they can no longer detect their activity. Recently, we discovered a ransomware (software that ransomed you) named Snatch, which deposits a key in the registry of the operating system of PCs: this causes Windows to start in safe mode, that is to say - say without protection. A slightly more basic variant is all the rage right now: a message appears on the screen warning you that your computer is infected with a virus. You are then invited to call a hotline to get rid of it. These are recurring scams in which the scammer (scammer) makes believe that your computer is infected and asks for a sum in exchange for its repair.

The best antivirus is you!

Are you infected with a virus? Don't panic: antiviruses are getting better and better at detecting and erasing malware.

It is of course essential to use anti- malware software and to carry out periodic scans, but above all, common sense must be used to ensure that you do not find an unusable computer. Do not click on suspicious links, open unidentified attachments, or download software from an unknown publisher.

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