Security Risk Analysis Toolkit
Security tools that run in your browser. There's no account to create, and nothing you enter is sent anywhere.
CVSS Calculator
Score vulnerabilities against the FIRST.org v3.1 specification.
Risk Matrix
5×5 likelihood × impact heatmap with discrete bands.
Asset / Threat / Control Register
Track assets, threats, and controls with inherent and residual risk.
STRIDE Threat Modeler
Per-element STRIDE checklist for processes, stores, flows, and externals.
Attack Tree
AND/OR tree with rolled-up probabilities and PNG/SVG export.
Bow-Tie Diagram
Threats, top event, consequences, and preventive/reactive barriers.
Monte Carlo Simulator
Seedable PRNG, histograms, Loss Exceedance Curve.
FAIR Calculator
Quantitative risk: sample LEF × LM, get ALE summary stats + Loss Exceedance Curve.
Password / Entropy Tools
Measure entropy, generate random passwords, and build EFF passphrases.