LLM Security Toolkit by CS

LLM Security Toolkit helps builders, security teams, and students learn how to assess and harden production LLM applications — entirely offline, on one Android phone or tablet.

The interactive tools are the hero of the app:

• OWASP GenAI Top-10 Scorecard — rate exposure across the ten risk categories and get a weighted residual-risk score.
• AI Security Maturity Assessment — answer per-domain questions to land a maturity level from 1 to 5.
• Prompt Injection Defense Coverage — toggle the controls you have in place and measure weighted coverage.
• Incident Severity Calculator — score an AI incident from Low to Critical, CVSS-style.
• Payload Library — representative test payloads for AUTHORIZED testing, each with what it tests, mitigation, and severity, copyable to your clipboard.
• Incident Response Runbooks — phased Detect, Contain, Eradicate, Recover, and Review steps with a live timer.
• Security Posture Report — aggregate your assessment results into one posture score, track the trend, and export as text or PDF.

Build a repeatable security review habit with a phased hardening checklist mapped to real attack categories, and keep score with a dashboard of overall progress, daily tips, streaks, and achievements.

Turn study into skill in the Learn area: chapter quizzes with instant feedback, a timed exam mode, flashcards, a glossary, achievements, and a diagram gallery.

As a bonus, the complete practical guide is built in — every chapter and diagram covering prompt injection, indirect prompt injection, data exfiltration, model extraction, insecure output handling, supply chain risk, incident response, and agentic AI governance — with adjustable text size, bookmarks, and resume.

Designed for educational and defensive use. All progress and assessment data stays on your device. No account, no ads, no tracking, and no network connection required.