How does a virus infect a site?

Any site owner sooner or later faces the problem of detecting viruses on their resource. How do viruses get to the site? What to do to destroy them? How to reduce the damage from their activity? In this article we will talk about such a painful problem, which is often revealed only after a signal of a malfunction from the users or the anti-virus system.

You may also notice on your own that something is going wrong in the work of the site. He can start to “slow down”, give out incorrect information or show something unusual at all. In any case, the main thing is to take the right security measures in order not to provoke the appearance of an even more serious problem.

How does the virus manifest itself on the site?

First, you need to understand that a virus is a malicious code that can be disguised as anything. Often, he gets to the site with the help of encrypted JavaScript-code that is added using the so-called injection. Immediately after this, the code begins to move into the active phase and form an iframe, sabotaging the work of media files on the site.

As soon as you notice that any of the records has disappeared, or the photos are displayed incorrectly, immediately sound the alarm and place the files in quarantine to analyze the content. Remember that long-term infection of the site may affect your users, because of what you risk losing the accumulated database of customers or visitors. Lost reputation and trust in the search engine is very difficult to return to its previous level.

How does the virus work on the site?

The most common method of infecting a site is to organize direct access via FTP for the first transmission of the virus. Then, the malicious code helps the hacker to “merge” the necessary account data, including logins and passwords. All mining is sent back to the attacker, who can now organize a serious attack on your site. He is assisted in this by robotic programs that use stolen information to damage the root files, or replace them with fake ones.

The difficulty of detection lies in the fact that the server, as such, cannot independently determine the threat. FTP connection is a common operation that is done every day. So, from the server’s point of view, nothing serious happens.

How to remove the virus from the site?

First, you need to take steps to find relevant vulnerabilities in order to prevent a similar infection again. Therefore, change all credentials, monitor each connected computer that has FTP access. This will help you anti-virus programs that will have the current database of virus signatures.

In terms of removing the virus, everything is simple. You need to find the malicious file and delete all its contents. Please note that it can store critical information for the operation of the system, so it may be necessary to delete only those data that have been compromised. Of course, no one has canceled the deployment of a backup. The main thing is not to damage it!

Infection prevention

As soon as you come across an infection of your own site, you will definitely want to avoid this in the future! Therefore, it is possible and necessary to conduct some activities to increase the level of security, so that you do not wonder how the site is infected with a virus. So, help you:

  • Storing passwords in safe places with regular updates;
  • Record passwords on a separate carrier, for example, a piece of paper;
  • Reduction of active devices connected to the server via FTP;
  • Selection of the best versions of paid antivirus programs and their regular updates.