Malicious software, also known as Trojans, worms or viruses, is a separate class of programs and applications designed to deliberately damage the computer and the data stored on it. It is not always possible to clearly classify this or that malicious software, so you just need to know how they spread and how you can protect yourself from them.
Viruses and worms most often move from one infected device to another, finding and using identical vulnerabilities. Virus programs can directly harm computers, and worms disrupt the safe operation of the network. Trojan horses or Trojans are most often disguised as already installed software or a new program that the user wishes to install on a computer. As a result, the entire operating system is disrupted. But, even after the malware is removed, the Trojans still remain. Therefore, it is so important to check the applications, programs and plugins used, especially when downloading from third-party resources.
At the moment, the most popular are:
Ransomware blocks access to certain files of the user, which makes it impossible to use the computer. To get access to the files back, you need to transfer a certain amount to an electronic wallet, but even this does not guarantee the return of data.
Spyware is represented by software that copies user data and sends it to third-party resources without his consent. Most often, such programs get into the computer together with free applications downloaded from third-party resources. Spyware can additionally be used to steal passwords to various resources by memorizing combinations through keystrokes and regular screenshots on the screen.
Intrusive advertising banners block the normal operation of the browser by directing the user to one specific site and pop-up banners. Sewn into various programs and installed without the knowledge of users. However, they can be removed relatively easily with a system rollback or a standard cleaner.
The fake antivirus is represented by a full copy of one of the well-known software and forces you to buy various software, scaring you with fake infection banners.
Protecting yourself from malicious software is easy enough. For starters, update your OS regularly to use the very best encryption systems. If you need to download the program, it is recommended to use only official sites that check any plugins before publishing. And most importantly, use a firewall or antivirus. They will prevent malicious software from entering your computer and signal such an attempt.