What are exploit kits and how do they infect computers via the browser?

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Exploit kits are ready-made software packages hosted on compromised websites or websites specifically created by malicious actors. Their main task is to automatically scan the visitor's browser and installed plugins for known vulnerabilities, followed by the covert download and installation of malware without user interaction.

The operation of an exploit kit begins the moment a user navigates to an infected page. The kit's scripts silently query the system for versions of the operating system, browser, installed runtime environments like Flash or Java, and various extensions. If a security flaw is discovered for which the kit has a ready-made exploit, the vulnerability is automatically exploited.

To minimize the risks of infection via exploit kits, it is necessary to follow digital hygiene practices:

1. Always update the web browser and the entire operating system to current versions in a timely manner, as developers patch vulnerabilities.
2. Completely abandon the use of outdated and insecure plugins like Adobe Flash, which often served as an entry point for attacks.
3. Use modern ad and script blockers that prevent the execution of malicious JavaScript code on suspicious websites.

What are exploit kits and how do they infect computers via the browser?

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