Implements ransomware-resistant backups using restic with S3-compatible Object Lock (AWS S3, MinIO, Backblaze B2), automating backup creation, integrity checks via restic check --read-data, retention enforcement, and restore testing. Use when building immutable backup infrastructure, adding a WORM copy to a 3-2-1-1-0 strategy, or automating scheduled backup-verification workflows.
Install
npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill implementing-immutable-backup-with-resticnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill implementing-immutable-backup-with-restic -a claude-code -gnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill implementing-immutable-backup-with-restic -a codex -ggemini skills install https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/implementing-immutable-backup-with-resticgh skill install mukul975/Anthropic-Cybersecurity-Skills implementing-immutable-backup-with-resticgit clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills /tmp/mukul975__Anthropic-Cybersecurity-Skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/implementing-immutable-backup-with-restic ~/.claude/skills/implementing-immutable-backup-with-restic # Claude Code
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/implementing-immutable-backup-with-restic ~/.agents/skills/implementing-immutable-backup-with-restic # Codex, Cursor, Gemini CLI, Copilot, OpenCode