[2/26 16:00] Anthropic Gives Retired Claude Opus 3 Its Own Substack / 300,000 Chrome Users Hit by Fake AI Extensions

AI News Flash for February 26, 2026 at 16:00 UTC. Topics: 1. Anthropic Gives Retired Claude Opus 3 Its Own Substack https://www.theverge.com/ai-artificial-intelligence/885200/anthropic-retired-claude-given-a-substack 2. 300,000 Chrome Users Hit by Fake AI Extensions https://www.foxnews.com/tech/300000-chrome-users-hit-fake-ai-extensions 3. Italy Puts AI at Center of National Defense Strategy https://decode39.com/13664/italy-puts-ai-at-the-center-of-national-defense-strategy/ 4. Apple Seeks Dismissal of Siri AI Fraud Lawsuit https://www.reuters.com/sustainability/boards-policy-regulation/apple-seeks-dismissal-fraud-lawsuit-over-siri-ai-epic-injunction-2026-02-26/