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Broken Authentication Testing

This skill should be used when the user asks to "test for broken authentication vulnerabilities", "assess session management security", "perform credential stuffing tests", "evaluate password policies", "test for session fixation", or "identify authentication bypass flaws". It provides comprehensive techniques for identifying authentication and session management weaknesses in web applications.

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SKILL.md
Quality
Evals
Security

Security

2 findings — 1 critical severity, 1 medium severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.

Critical

E006: Malicious code pattern detected in skill scripts

What this means

Detected high-risk code patterns in the skill content — including its prompts, tool definitions, and resources — such as data exfiltration, backdoors, remote code execution, credential theft, system compromise, supply chain attacks, and obfuscation techniques.

Why it was flagged

Malicious code pattern detected (high risk: 1.00). The content contains multiple explicit, actionable techniques for credential theft, account takeover, and detection-evasion (credential stuffing with breached lists, JWT "none" forgery, session fixation, host-header reset redirection to attacker domains, IP rotation/X-Forwarded-For rate-limit bypasses, OTP brute-forcing guidance), which are clear instructions that can be used for deliberate malicious abuse despite being framed as testing.

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Medium

W011: Third-party content exposure detected (indirect prompt injection risk)

What this means

The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.

Why it was flagged

Third-party content exposure detected (high risk: 1.00). The skill explicitly instructs fetching and analyzing content from arbitrary target web applications and public breach datasets—e.g., requests.get("https://target.com/login") in Phase 6, capturing password reset links in Phase 10, and using "Have I Been Pwned"/SecLists in credential testing—which are untrusted third‑party sources whose content can drive subsequent testing actions.

Repository
Dokhacgiakhoa/antigravity-ide
Audited
Security analysis
Snyk

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.