This Week in AI Security - 19th February 2026

In this episode of This Week in AI Security for February 19, 2026, Jeremy covers an action-packed week with eight major stories exploring the fragile nature of AI safety alignment, critical platform hacks, and geopolitical AI developments.

Key Stories & Developments:

• G-Obliteration Attack: Microsoft security researchers discovered a one-prompt training technique that strips safety alignment from LLMs. By leveraging Group Relative Policy Optimization (GRPO), attackers can use a single mild prompt to cause cross-category generalization of harm. This effectively removes guardrails across 15 open-source models while preserving their utility.
• Orchids Vibe-Coding Hack: A BBC reporter was hacked on Orchids, a popular "vibe-coding" platform. A security researcher demonstrated a malicious code injection that compromised the user's development environment.
• AI vs. Legacy Email Security: AI-powered cyberattacks are successfully bypassing 88% of legacy email security systems. Attackers are utilizing LLMs to generate highly authentic phishing and impersonation content at scale.
• AI Doctors Evade Privacy Rules: AI-powered health services are not subject to the same strict privacy regulations as traditional healthcare facilities. This raises concerns around data leaks and medical hallucinations.
• OpenClaw Info Stealer: A variant of the Vidar info-stealer is targeting the OpenClaw ecosystem. The attack aims to exfiltrate configuration files and gateway authentication tokens.
• OpenClaw Founder Joins OpenAI: Peter Steinberger, the creator of the OpenClaw framework, has joined OpenAI. The OpenClaw project will transition to an open-source foundation supported by OpenAI.
• Claude's Geopolitical Role: Reports indicate that Anthropic's Claude was utilized via the Palantir platform during a US military raid in Venezuela. This raid led to the capture of Nicolas Maduro.
• ASIS AI Safety Report 2026: The International AI Safety Report highlights three emerging risks. These include the lowered barrier for biological weapons, the surge in deepfakes and fraud, and the difficulty of safety research.

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Episode Links

https://www.microsoft.com/en-us/security/blog/2026/02/09/prompt-attack-breaks-llm-safety/

https://www.bbc.com/news/articles/cy4wnw04e8wo

https://www.cpapracticeadvisor.com/2026/02/09/study-ai-powered-cyber-attacks-hit-88-of-legacy-email-security-systems/177694/

https://cyberscoop.com/ai-healthcare-apps-hipaa-privacy-risks-openai-anthropic/

https://thehackernews.com/2026/02/infostealer-steals-openclaw-ai-agent.html

https://techcrunch.com/2026/02/15/openclaw-creator-peter-steinberger-joins-openai/

https://www.theguardian.com/technology/2026/feb/14/us-military-anthropic-ai-model-claude-venezuela-raid

https://www.asisonline.org/security-management-magazine/latest-news/today-in-security/2026/february/2026-international-safety-report/