Harden native agents running on machines you do not fully control. Covers installer integrity and code signing per platform, OTA update channels with rollback and kill-switch, mTLS with per-agent identity and rotation, local secret storage (Keychain, DPAPI, libsecret), anti-tampering signals, and telemetry hygiene.…
Apply safety controls when an LLM agent has authority to act on real systems. Covers blast-radius classification, dry-run-first patterns, out-of-band approval gates, scope locking, idempotency, kill switches, and rollback strategies. Invoke when designing an autonomous agent, when granting an LLM write access to…
Harden Android apps against the platform-specific failure modes. Covers Android Keystore and StrongBox, encrypted local storage, network security config and certificate pinning, WebView hardening, exported components and intent hijacking, backup rules, and Play Integrity with root detection as a signal. Invoke when…
Apply the OWASP API Security Top 10 to REST and GraphQL endpoints. Covers broken object-level authorization (BOLA), mass assignment, excessive data exposure, unrestricted resource consumption, SSRF, broken function-level authorization, and GraphQL depth and complexity limits. Invoke when designing a new API, reviewing…
Apply modern authentication standards instead of historical mistakes. Covers NIST 800-63B-aligned passphrase policy (no rotation theatre), MFA enforcement and factor tiering, session versus JWT tradeoffs, OAuth scope minimization, and account lockout that does not enable enumeration. Invoke when building auth from…
Design backends that survive redeploys, server reboots, and modest scaling. Covers stateless application servers, state placement (object storage, managed databases, Redis), immutable deploy artifacts, health checks, graceful shutdown, database migrations that don't lock the world, and the twelve-factor baseline.…
Design backups that actually work when they are needed. Covers RPO and RTO definition, the 3-2-1 rule, encryption before leaving the host, ransomware-resistant immutable storage, restore drills, and the split between operational and legal retention. Invoke when 'we have backups but nobody has restored them' is true…
Harden a site behind Cloudflare end-to-end, from account to zone to origin. Covers DNS hygiene, origin-IP protection via Authenticated Origin Pulls and IP allowlisting, WAF managed rules, Bot Fight Mode, rate limiting, Transform Rules for security headers, Zero Trust Access for admin paths, and R2 / Pages security.…
Audit an inherited or unfamiliar codebase systematically rather than ad-hoc. Covers scope discipline, day-0 triage, SAST and SCA tool recipes (semgrep, CodeQL, gitleaks, trivy), OWASP Top 10 mapped to grep patterns, auth-surface walkthrough, and writing reports that drive remediation. Invoke when inheriting a…
Cover Germany, Austria, and Switzerland compliance requirements that have security implications. Covers Impressum content per TMG/MStV/ECG, Datenschutzerklärung per DSGVO/TTDSG/DSG, AGB and Widerrufsbelehrung, AVV/DPA for sub-processors, technical-organizational measures (TOMs), and cookie consent that satisfies all…
Audit and defend against malicious dependencies in npm, pnpm, PyPI, and similar ecosystems. Covers lockfile hygiene, the limits of npm audit, behavior-level scanning with socket.dev, postinstall script review, typosquat and slopsquat detection, and minimum-permission CI runs. Invoke when adding a new dependency, after…
Audit distributed systems where the highest-impact findings live between the components, not inside any one of them. Covers architecture mapping, trust boundary enumeration, per-channel protocol review (replay, ordering, forgery), STRIDE-lite threat modeling, failure-mode analysis, and forensic accountability. Invoke…
Secure the DNS and domain layer below TLS — the records, registrar, and provider access everyone forgets. Covers dangling records and subdomain takeover, registrar hardening and transfer locks, CAA, DNSSEC trade-offs, zone hygiene, split-horizon leakage, scoped DNS API tokens, and CT-log monitoring. Invoke when…
Run containers with a defensive baseline that survives production. Covers non-root users, read-only filesystems, dropped Linux capabilities, secret mounts instead of build-time bake-in, image scanning with trivy, distroless and minimal base images, and the Docker-bypasses-UFW firewall pitfall. Invoke when adding…
Configure email authentication so legitimate mail lands and spoofed mail is blocked. Covers SPF, DKIM, DMARC (with the p=none → p=quarantine → p=reject migration path), MTA-STS, TLS-RPT, ARC, and BIMI. Invoke when launching a new sending domain, when domains are being spoofed, or when transactional email is landing in…
Accept user file uploads without introducing remote code execution, stored XSS, or polyglot attacks. Covers magic-byte validation, strict type allowlists, image re-encoding to defang embedded payloads, EXIF stripping, virus scanning, path-safe storage keys, and serving via a separate origin with Content-Disposition.…
Implement the technical side of GDPR and EU privacy compliance. Covers data inventory, subject-access (SAR) and deletion endpoints, anonymization patterns, log scrubbing, the 72-hour breach notification path, and sub-processor (DPA / AVV) tracking. Invoke when building a product handling EU resident data, responding…
Harden GitHub Actions workflows against the well-known footguns. Covers SHA-pinned third-party actions, scoped GITHUBTOKEN permissions, OIDC in place of long-lived cloud credentials, the pullrequesttarget trap, untrusted-input interpolation, and protected deploy environments. Invoke when adding a new workflow…
Lightweight detection techniques that work without a SIEM. Covers fake admin paths, decoy .env files, canary tokens, fake API keys planted in JS bundles, and tarpits that slow automated scanners. Invoke when public services see constant automated probing, when complementing fail2ban and WAF rules, or when high-signal…
Run a structured response to a suspected web or server compromise. Follows SANS PICERL — Preparation, Identification, Containment, Eradication, Recovery, Lessons Learned — and includes a post-mortem template. Invoke when a site is defaced, when malware or webshells appear, when admin accounts arrive unannounced, or…
Harden iOS and macOS apps against the platform-specific failure modes. Covers Keychain accessibility tiers, App Transport Security, certificate pinning tradeoffs, file protection classes, biometric authentication, jailbreak detection as a signal rather than a defense, and third-party SDK review. Invoke when shipping a…
Harden a Kubernetes cluster's data plane and control plane. Covers Pod Security Standards (Restricted, Baseline, Privileged), RBAC with least privilege, NetworkPolicy default-deny, secrets management without raw env vars, admission controllers (Kyverno, OPA Gatekeeper), image scanning, and audit logging. Invoke when…
Apply operational controls to applications built on the Anthropic API or similar LLM SDKs. Maps the OWASP LLM Top 10 to practical controls, plus rate limiting, cost caps, PII scrubbing, audit logging, model-version pinning, and an AI-incident response playbook. Invoke when shipping an LLM feature to production, when…
Recognize the recurring security failure modes of LLM coding agents — Claude Code, Copilot, Cursor, Windsurf, and similar. Covers bulk operations without per-item review, safety-guard bypass as friction removal, acting on indirect injection, secrets in logs and commits, slopsquatting, outdated training patterns…