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Cybersecurity Atlasby Jer Catallo

Cybersecurity Atlas

One reference surface for application, cloud and product security.

API documentation

Find & Respond

AppSec Playbook
Vulnerabilities Atlas

Build & Harden

Hardening Atlas
Security Tooling

Learn the Fundamentals

Security Concepts

Resources

OWASP Top 10
MITRE ATT&CK
NIST Cybersecurity Framework

© 2026 Jer Catallo. Reference material only, always confirm against the official source.

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Hardening

Hardening

Hardening Atlas

Prioritised hardening checklists across application, API, website, container, Kubernetes, cloud, database, DevOps, DevSecOps, IoT and kiosk surfaces - each broken into concrete, ordered steps.