Gatekeeper

2 posts

macOS code signing and notarization, and what the warnings do and don't tell you about an app.

• 25 October 2026

  "Apple could not verify claude" on Mac: is it safe?

  macOS blocked Claude Code with a malware warning. Why it happens, a one-command check that it's really Anthropic's, and the safe fixes in order.

• 2 October 2026

  "Apple could not verify" this app: what it means

  Why macOS warns about unsigned apps, what the warning does and doesn't tell you, how to check an app yourself, and how to open one you trust.