How to remove a virus that has penetrated the computer. Practice specialist.

A computer is a spacious field for activity. And the more this activity, the more complex and sophisticated viruses become - malicious programs that threaten the security or performance of computers. Therefore, you need to have at least a minimum knowledge of how to remove the virus. Each user should take care of the safety of their profile, their personal data.

What are viruses - varieties

The situation in the market of malware (malicious software) is now such that classical viruses of non-resident type go into non-existence (only a person can launch such a virus into action). However, there are varieties of resident viruses, and we'll look at how to remove a virus when it starts automatically, without any user intervention.

The classification of modern viruses is as follows:

• Actually viruses (the classical version), now there are not enough of them.
• Viruses that spread through the network are network worms.
• Trojan programs (they are usually written to monitor a remote computer using the deployment method).
• Viruses are spies (they collect confidential information and pass it on to the creator).
• Dial-up programs (for paid numbers) - carry out paid dialing to numbers that you did not make in the settings of your network connection.
• Advertising programs (hidden installation).
• Viruses are extortionists.
• Combined variants of the above malware.

How to remove a virus. Extortionist or Trojan. Practice of a specialist

Big troubles carry a virus-extortionist. Typically, it appears one day in the form of a banner on the desktop with the requirement to send sms to the paid number. In this case, all other application programs are blocked by it and with each launch you see only this banner (picture).

An attacker, in this way, tries to "dissolve" you for money. There are several effective options for how to remove a virus that extorts money.

Kaspersky Lab's Deblocker - http://support.kaspersky.com/viruses/deblocker. On this site there is an updated database with keys that require you to enter a malicious program. It is enough just to indicate on the site the text of the message and the number where you are asked to send sms.

Option for those who are looking for how to remove the Trojan virus that blocks network access. There are several viruses of this type: Trojan-Ransom.BAT.Agent.c, Trojan-Ransom.Win32.Digitala and others. All these names are nothing more than the classification of malware by anti-virus tools. If you have one of these malware programs on your computer, you need to correct something in the system settings.

The first virus modifies the Hosts system file (it contains the paths to frequently used network resources). So, you need to open it and remove all rows, except the classic 127.0.0.1 localhost mapping. After rebooting the network should earn as usual.

How to remove the Trojan-Ransom.Win32.Digitala virus is more complicated. Most likely, you will need an auxiliary medical utility. It can be downloaded from the anti-virus resource http://www.kaspersky.com/support/downloads/utils/digita_cure.zip.

Next, you need to restart the PC and press the F8 key before loading windows. A menu will appear on the screen to select valid boot options for the system. The upper and lower arrows on the keyboard, select the "Download in safe mode".

Before deleting the virus, unzip the utility and run it. The program will surely find it In the scan mode and prompts you to delete. Then start the PC in the standard mode.

Finally on safety

At the enterprises for the security of local or corporate networks , the system administrator or several IT department employees are responsible. If you are an ordinary user of a home PC, then you can protect yourself only you can. First of all do not forget:

1. Install a modern anti-virus program and update it in a timely manner.

2. Install a personal firewall for additional protection on the network.

3. Do not download files from questionable Internet sources, if possible, do not visit such resources.