Run a targeted spearphishing simulation for initial access by developing OSINT-derived pretexts, building payloads (HTML smuggling, macro docs, ISO/LNK, OneNote, QR codes), standing up look-alike-domain email infrastructure with SPF/DKIM/DMARC via GoPhish, and tracking results.
Install
npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill conducting-spearphishing-simulation-campaignnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill conducting-spearphishing-simulation-campaign -a claude-code -gnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill conducting-spearphishing-simulation-campaign -a codex -ggemini skills install https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/conducting-spearphishing-simulation-campaigngh skill install mukul975/Anthropic-Cybersecurity-Skills conducting-spearphishing-simulation-campaigngit 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/conducting-spearphishing-simulation-campaign ~/.claude/skills/conducting-spearphishing-simulation-campaign # Claude Code
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/conducting-spearphishing-simulation-campaign ~/.agents/skills/conducting-spearphishing-simulation-campaign # Codex, Cursor, Gemini CLI, Copilot, OpenCode