Hackers exploited a critical zero-day vulnerability in a server running the KnowledgeDeliver learning management system (LMS) to deploy the Godzilla web shell.

CVE-2026-5426 enabled KnowledgeDeliver LMS attacks before February 24, 2026, leading to Cobalt Strike infections.

CVE-2026-5426, a hardcoded ASP.NET machineKey in KnowledgeDeliver, was exploited as a zero-day in ViewState deserialization ...

As long as computers have been around, there have been hackers who have progressively improved and become sneakier at exploiting them. Last year, Microsoft used Microsoft 365 Defender data to find ...

Attackers often use web shells to mimic legitimate files and compromise web servers. These best practices will lower your risk. One tool that bad guys use to go after your web servers is a web shell.

Microsoft says that the number of monthly web shell attacks has almost doubled since last year, with an average of 140,000 such malicious tools being found on compromised servers every month. Web ...

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This ebook, based on the latest ZDNet/TechRepublic special feature, offers a detailed look at how to build risk management policies to protect your critical digital assets. Read now In a blog post ...

Malware known as China Chopper is behind the recent headline-making attacks against vulnerable Microsoft Exchange Servers worldwide. China Copper is a type of malicious software known as a Web shell, ...