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Hunt Missing/Weak Rate Limiting — login brute force, OTP/2FA brute force (10^6 keyspace), password-reset-token brute, credential stuffing, username/email enumeration via error-string / status-code / timing differences, weak password policy, missing CAPTCHA (CAPTCHA token replay / single-use / concurrency-window bypass specifics → hunt-captcha-bypass), IP-based rate-limit bypass via X-Forwarded-For and friends, ReDoS. Distinguishes hard lockout vs soft IP-throttle vs CAPTCHA-injection vs silent shadow-throttling (avoids false-negative 'no rate limit' conclusions). Medium to Critical depending on what the brute reaches (OTP→ATO = Critical).

Install

npx skills add elementalsouls/Claude-BugHunter --skill hunt-brute-force -a claude-code

Installs to .claude/skills/hunt-brute-force/ · Each command fetches the skill straight from GitHub with the open skills CLI.

No download: this skill’s licence (MIT) does not let us redistribute its files. The install commands fetch them from GitHub instead.

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Why 91

Security100
Provenance85
Maintenance100
Licence100
Adoption59

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