What is a web shell?

Editor’s note: The Need to Know is a new series from Talos, which focuses on cybersecurity terms, threats, tools and tactics that are discussed in our broader threat research. Think of this as a living encyclopedia of security terms and trends.

Cisco Talos Incident Response recently released our 2023 Q1 Incident Response Quarterly Trends report. One of the most noteworthy trends was the prolific use of web shells in cyberattacks.

In fact, not only were web shells the most …

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