Two anti-viruses in the system it's a very bad idea

Is two anti-viruses in the system a good idea? Alfred Hitchcock said that "Waiting for danger is worse than the moment when it falls on a person". That's why so many people focus on prevention, not always considering whether all the steps they take are really valid. The same is true with computer security. Will a dual antivirus increase the security of the equipment? We answer this question.

Manufacturers of network security solutions strongly advise against using two antivirus programs at the same time. Is this just a marketing gimmick on the part of companies that is to discourage users from buying and installing competition products? In this case, it is not about earning money, but above all about technical issues and comfort of using the equipment on which the software is installed. Why does the slogan "double does not always mean better" also work in this context?

Two anti-viruses in the system are a bad idea

Two anti-viruses in the system is a good idea?

Endless scanning loops

Although this was mainly a problem in the early years of antivirus software development, it is still worth mentioning. In those days, antivirus software usually scanned all files on the computer to scan them for possible threats. When two anti-virus programs are installed on the device, the first program will read the file to scan it with matching patterns, then the second program will also read the file and a new independent signal will be triggered which will force the first anti-virus program to rescan the file and so on ... As a result, both antivirus products would again scan files in an infinite loop.

Potential incompatibilities

Modern anti-virus software acts as an additional layer located between the operating system's base and applications and programs. Security programs are created in many different ways and often their creators do not stick to the recommended coding standards, which may affect their compatibility with other software and cause error messages.

First come first served?

Imagine that you have two antivirus software installed with scanners enabled. You download a dangerous file and a question arises - which one will quarantine it first or remove the threat? Does it make a difference? It turns out that it is not. In this case, you may encounter error messages because the files suddenly disappear for one of the two programs during the quarantine attempt.

Waste of resources

The drastically increasing number of threats therefore requires continuous work and "adding" elements to the software that protects the computer. This naturally causes a relatively large use of computer resources, especially its memory (RAM). During the whole time of running two full antivirus programs you are wasting resources because 90% of their functions will overlap. Each new file on the computer would have to be scanned by both products that use a lot of computer power, which could undoubtedly be better used for other tasks.

The recommendation is simple: double protection does not always make sense. Even if the additional security is free, remember that there are always hidden costs - if not expressed in money, it is in your time or nerves, caused by a slower computer operation.



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