AI Access Is Becoming Strategic A legal-tech firm has sued the U.S. government over restrictions that limited foreign access to Anthropic’s most advanced models. #19

TopCat AI Signal Report #19 - AI Is Moving Into Team WorkflowsAnthropic launched Claude Tag in Slack, allowing teams to summon Claude in conversations to read context, break down tasks, and surface updates.Small-business signal: AI is becoming a teammate inside daily communication tools, not just a chatbot in a separate window.3. AI Cyber Risk Is Rising FastAxios reported a 1,380% rise in device-code phishing attacks during the first four months of 2026 compared with the second half of 2025. AP also reported that Anthropic’s Mythos model found vulnerabilities in classified U.S. government systems during testing.Translation: AI is improving both defense and offense. Cybersecurity is now a front-line AI issue.