Computer viruses steal user passwords, funds from virtual wallets, block the operation of the machine and require sending SMS, make files hidden on disks, and spoil the lives of users in other ways. If you find this, you should immediately take action to search for and remove the malicious program.
Instructions
Step 1
If an antivirus is already installed on your computer, first check if the license for it is valid. If so, first start the process of updating the application databases, and then perform a full scan of all hard drives for viruses. If such are found, select the menu item corresponding to the disinfection or removal (if disinfection is impossible) of the infected files.
Step 2
If there is no antivirus, or if the license for it has expired, buy, respectively, the antivirus itself, or renew the license. If that doesn't suit you, uninstall your old paid antivirus and install a free one. It will always be updated without requiring renewal, which is very convenient. After uninstalling the antivirus, additional configuration of network interfaces may be required in order for access to the network to appear again. At home, you can use PC Tools Antivirus Free or AVG Free, at work - only the first of these programs (the second is free only for home use). In no case should you install several antiviruses at once - they will conflict. After replacing the antivirus with a new, functional one, check all the disks of the computer for viruses again.
Step 3
In addition to antivirus, you can also use antivirus utilities. They differ in that they are not able to update, but they can peacefully coexist with the existing antivirus, which is used as the main one. There are two such programs: Zaitsev Anti-Virus and Dr. Web Cure IT. The first one is free for any use, the second one is for home use only. To update the database of such a utility, just download its new version. It does not require installation and starts immediately after downloading and unpacking the archive.
Step 4
The likelihood of a virus infecting a computer running a Linux operating system is quite low. If you still suspect that the machine is infected, install ClamAV antivirus and scan all hard drives with it. A special bootable Dr. Web Live CD based on Linux can be used to scan machines with both Linux and Windows. Having burned such a disc, boot the computer from it and carry out the check as if you were using a regular antivirus. If you want to update the databases on such a disk, use a "blank" of the CD-RW type, periodically downloading and writing new versions of the software package to it.
Step 5
In case you suspect a separate file for the presence of malicious code, go to the VirusTotal website and upload this file there. It will be automatically checked by several dozen anti-virus programs, and the results will not be displayed on the screen. Do not submit files containing confidential information to this site.
