What is a Web Shell?

A web shell attack is the process of injecting an infected script into a web server so that malicious commands can be issued to the compromised server from a web browser.

A web shell attack could facilitate the following:

Backdoors are most efficiently established with web shells. Because of this, cyberattacks rarely immediately follow a web shell injection. Usually, cybercriminals are implementing an access point for future attacks.

Key takeaways

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    The best form of defense is to remediate the security vulnerabilities that could facilitate web shell injections.
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    Web shells are primarily used as persistence mechanisms.
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    To mitigate successful web shell injections, It’s important to keep web server software and all third-party software updated with the latest security patches.
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