Blog Posts | Joshua Berkowitz

2 Articles

github × incident response ×

How Attackers Exploited ViewState Deserialization to Breach Sitecore Deployments

A sophisticated cyber campaign has targeted organizations running Sitecore products, exploiting a critical zero-day flaw ( CVE-2025-53690 ). Attackers gained remote code execution by abusing exposed A...

cybersecurity deserialization incident response malware remote code execution Sitecore ViewState zero-day

Sep 21, 2025

0 2090

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Shai-Hulud: The First Self-Propagating npm Supply Chain Worm

In September 2025, the JavaScript community experienced a watershed moment: the Shai-Hulud worm swept through npm, infecting over 100 popular packages. This attack was not just another instance of mal...

DevSecOps GitHub incident response JavaScript malware npm security supply chain

Sep 19, 2025

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