* [Blog](https://www2.paloaltonetworks.com/blog) * [Palo Alto Networks](https://www2.paloaltonetworks.com/blog/corporate/) * Cortex AES # Palo Alto Networks ## Cortex AES [](https://www2.paloaltonetworks.com/blog/security-operations/how-cortex-aes-protects-against-compromised-claude-code-extensions/) [How Cortex AES Protects Against Compromised Claude Code Extensions \------------------------------------------------------------------](https://www2.paloaltonetworks.com/blog/security-operations/how-cortex-aes-protects-against-compromised-claude-code-extensions/) On October 29, 2026, attackers turned a trusted developer tool into a potential backdoor. Malicious versions of the Claude Code extension were distributed through Cursor's extension marketplace, exposing developers to malware capable of collecting host information, establishing persistence, and attempting to enable unauthorized remote access. In just 11 hours, up to 5,000 Cursor users were potentially exposed.1... 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Mar 16, 2026 By [Lotan Sery](https://www.paloaltonetworks.com/blog/author/lotan-sery/?ts=markdown "Posts by Lotan Sery") ![The Evolution of GlassWorm: How a Known Threat is Rewriting its Playbook through GitHub](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2026/08/software-supply-chain.png) ## [The Evolution of GlassWorm: How a Known Threat is Rewriting its Playbook th...](https://www2.paloaltonetworks.com/blog/security-operations/glassworm-evolution/) On October 17, the Cortex AES team disclosed GlassWorm - the first self-propagating worm targeting VS Code extensions, using invisible Unicode characters to hide malicious code that literally disappears from co... Nov 06, 2025 By [Idan Dardikman](https://www.paloaltonetworks.com/blog/author/idan-dardikman/?ts=markdown "Posts by Idan Dardikman"), [Yuval Ronen](https://www.paloaltonetworks.com/blog/author/yuval-ronen/?ts=markdown "Posts by Yuval Ronen") and [Lotan Sery](https://www.paloaltonetworks.com/blog/author/lotan-sery/?ts=markdown "Posts by Lotan Sery") ![GlassWorm: First Self-Propagating Worm Using Invisible Code Hits OpenVSX Marketplace](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2026/10/CEO_AI_Article.jpg) ## [GlassWorm: First Self-Propagating Worm Using Invisible Code Hits OpenVSX Ma...](https://www2.paloaltonetworks.com/blog/security-operations/glassworm-first-self-propagating-worm-using-invisible-code-hits-openvsx-marketplace/) A month after Shai Hulud became the first self-propagating worm in the npm ecosystem, we just discovered the world's first worm targeting VS Code extensions on OpenVSX marketplace. But GlassWorm isn't just anot... Oct 18, 2025 By [Idan Dardikman](https://www.paloaltonetworks.com/blog/author/idan-dardikman/?ts=markdown "Posts by Idan Dardikman") ![First Malicious MCP in the Wild: The Postmark Backdoor That's Stealing Your Emails](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2026/10/AdobeStock_777194259-scaled.jpeg) [Email Security](https://www.paloaltonetworks.com/blog/security-operations/category/email-security/?ts=markdown) ## [First Malicious MCP in the Wild: The Postmark Backdoor That's Stealing Your...](https://www2.paloaltonetworks.com/blog/security-operations/first-malicious-mcp-in-the-wild-the-postmark-backdoor-thats-stealing-your-emails/) You know MCP servers, right? Those handy tools that let your AI assistant send emails, run database queries, basically handle all the tedious stuff we don't want to do manually any... 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