Showing only posts tagged Security. Show all posts.

Patch for Windows Defender 0-day could allow attackers to fill hard disk

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A patch Microsoft released on Wednesday to fix a zero-day vulnerability in its Defender security engine may cause Windows machines to write files large enough to completely consume available disk space, the researcher who discovered the flaw said. RoguePlanet, tracked as CVE-2026-50656, came to public notice in June when …

Google pays $250K for Linux vulnerability allowing guest VM escapes

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A Linux vulnerability that allows untrusted virtual machines to gain root access to host machines is one of two high-severity flaws to surface this week in the open source operating system. The vulnerability resides in KVM, which is, in essence, a virtual machine app included in the kernel of …

Designing for the inevitable: System prompt leakage and mitigations in generative AI applications

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System prompts form the foundation of generative AI applications. A system prompt is a collection of instructions and operational context provided to a large language model (LLM) that shapes how the model behaves and interacts with users and tools. System prompts often contain proprietary information, including role definitions, behavioral …

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