Free Resource

Free Security & Study Tools

No sign-up required for any of these.

ALE / SLE / ARO Risk Calculator

Calculate Annualized Loss Expectancy, including risks that happen less than once a year, projected over time, with a cost-to-fix comparison.

CVSS v3.1 Calculator

Score a vulnerability, then turn that score into a dollar figure and a patch-now-or-not verdict for your own organization.

Subnet & CIDR Calculator

Network, broadcast, and host range, plus security-zone templates (AWS/Azure, Purdue OT, Zero Trust) and an overlap checker.

IAM Policy Linter

Paste a JSON IAM policy and flag wildcard actions, iam:PassRole privilege escalation, and public trust policies - 100% client-side.

Tabletop Discussion Card Generator

Get a real incident-response discussion card - setup, decision, and answer options - by role and threat type.

Spaced Repetition Schedule Planner

Generate a study review schedule with expanding intervals.

DR / BCP Plan Builder

List your critical systems, get a suggested recovery tier from each one's Maximum Tolerable Downtime, and catch RTO/RPO gaps before an outage finds them.