AI SECURITY &amp; COMPLIANCE GUIDES

Due DiligenceSecurity QuestionnaireEvidence

Series A Security Checklist for Startups: What CTOs Need Before Due Diligence

If you are raising, selling into mid-market, or answering customer security questionnaires, this is the short list that matters: access control, logging, secrets, backup evidence, vulnerability scans, and incident readiness.

April 23, 2026Read →

OWASP A01AuthorizationSaaS APIs

IDOR Vulnerabilities in SaaS Apps: The Broken Access Control Bug That Breaches Startups

One missing userId filter can expose every customer account in your SaaS. Here is how IDOR happens in modern CRUD backends and the exact query pattern that stops it.

April 22, 2026Read →

Tenant IsolationB2B SaaSData Boundaries

Multi-Tenant Isolation Security for SaaS Startups: Prevent Cross-Customer Data Leaks

True multi-tenant security is not just a tenantId column. You need isolation in queries, caches, storage, background jobs, analytics, and search indexes.

April 21, 2026Read →

Secrets HygieneKey RotationCI Security

Secrets Management for Startups: Stop Shipping .env Files and Hardcoded Keys

Most startup breaches start with a key in code, logs, CI, or frontend bundles. This guide covers the full lifecycle: generate, store, rotate, scope, audit, and delete.

April 20, 2026Read →

SSRFCloud MetadataURL Fetch

SSRF Vulnerabilities in Next.js and Node.js: How Startups Expose Internal Services

Link previews, importers, webhook fetchers, and AI URL tools all create SSRF risk. One raw fetch() on user input can hand attackers your cloud metadata and internal APIs.

April 19, 2026Read →

Rate LimitingBrute ForceAI Spend

API Rate Limiting for Startups: Prevent Brute Force, Abuse, and AI Cost Spikes

Rate limiting is not a nice-to-have. It is the difference between an annoying bot and a breach, an outage, or a surprise OpenAI invoice.

April 18, 2026Read →

JWT SecurityAuthSession Design

JWT Security for Startups: 9 Mistakes That Turn Auth Into an Incident

Most JWT problems are not exotic cryptography. They are operational mistakes: decode without verify, weak secrets, long expiry, no audience checks, and browser storage mistakes.

April 17, 2026Read →

AI Compliance11 min read

SOC 2 Evidence Checklist for Developers: What Auditors Actually Need from Engineering

Auditors do not want slide decks. They want evidence: branch protection, access control, vulnerability scans, change logs, backups, incident records, and proof that controls actually run.

SOC 2Audit EvidenceEngineering Controls

April 16, 2026Read →

Penetration TestingBudgetReadiness

Penetration Testing for Startups: When You Need It, What It Costs, and What to Fix First

Most startups buy pentests too early or too late. This guide explains when an automated scanner is enough, when buyers or insurers force a pentest, what it costs, and how to prepare.

April 15, 2026Read →

EU AI Act15 min read

EU AI Act Compliance for Developers: Articles 9, 13, 14, 52 Explained

The EU AI Act is the world's first comprehensive AI regulation. These four articles define your compliance roadmap — with code examples, penalty structure, and enforcement timeline.

Art. 9 Risk MgmtArt. 13 LoggingArt. 14 OversightArt. 52 Disclosure

April 13, 2026Read →

OWASP LLM12 min read

Model Output Validation: Why LLMs Hallucinate Into Your Database

Your LLM generates SQL that drops tables. JSON with "admin": true. Code that exfiltrates secrets. Three types of output hallucination and the 5-step defense framework.

LLM02 Output HandlingSQL HallucinationCode Gen Security

April 11, 2026Read →

OWASP LLM14 min read

Prompt Injection Vulnerabilities in Production: How Hackers Hijack LLM Apps

Prompt injection is the AI equivalent of SQL injection. Real exploits from production apps, three layers of attack (direct, context, indirect), and the complete defense checklist.

LLM01 Prompt InjectionIndirect InjectionRAG Poisoning

April 9, 2026Read →

Cybersecurity8 min read

We Scanned Supabase and It Scored 100/100 — Here's What Perfect Security Looks Like

Supabase powers 1M+ databases. We ran a full security scan across 628 files — auth, data protection, secrets, injection, logging, AI governance — and found zero vulnerabilities. Here's every practice they got right.

OWASP Top 10Clean ScanSecurity Posture

April 8, 2026Read →

OWASP A06:2021CWE-1035CWE-1321

How rollup@4.39.0 Turns Your CI Pipeline Into a Secret Vault Leak

GHSA-mw96-cpmx-2vgc in rollup@4.39.0 enables prototype pollution during builds, exposing CI secrets. Learn the attack chain and how to fix it now.

OWASP A06:2021CWE-1035CWE-937

7 Active CVEs in One Fastify Dependency: The Silent Supply-Chain Threat

node-forge@1.3.1 ships 7 GHSA advisories into your Fastify app. Learn how prototype pollution chains to full validation bypass — and how to fix it in CI.

OWASP A06:2021CWE-937CWE-1035

3 Open Advisories in Elysia's Deps That Can DoS Your API

file-type@20.4.1 and valibot@1.1.0 carry 3 open GHSA advisories enabling ReDoS, heap reads, and schema bypass. Learn to fix and prevent this in Elysia.

OWASP A06:2021CWE-829NIST SI-7

Mutable GitHub Actions Tags: The Supply Chain Backdoor in Your CI

A single mutable @v3 tag can let attackers execute code in your CI pipeline and steal npm tokens. Learn how to pin actions to commit SHAs and prevent it.

OWASP A06:2021CWE-1035CWE-1104

6 CVEs in Hono's Dependency Chain: The Invisible Supply Chain Risk

Undici request smuggling and 5 more CVEs in Hono's dependency graph expose thousands of Cloudflare Workers apps. Learn to detect and fix them before attackers do.

OWASP A07:2021CWE-798NIST AC-2

The 'superSecret' JWT Backdoor Hiding in Plain Sight

A hardcoded JWT fallback secret lets attackers forge admin tokens in 90 seconds. Learn how this CWE-798 flaw works and how to fix it permanently. Scan your repo now.

April 6, 2026Read →

OWASP LLM12 min read

OWASP LLM Top 10 in Production: Real Vulnerabilities We Found in 50 Apps

We scanned 50 real-world LLM applications and found the same vulnerability patterns across all of them. Here's what the OWASP LLM Top 10 actually looks like in production code.

LLM01 Prompt InjectionLLM02 Output HandlingLLM08 Excessive Agency

April 4, 2026Read →

Cybersecurity7 min read

API Key Exposed in Your Code? Here's Exactly What To Do

Found a secret committed to your repo? Rotate first, then follow the 5-step response playbook: audit git history, scan for more secrets, fix your .gitignore, and prevent it with CI scanning.

Secrets ExposureIncident ResponseGit History Audit

April 2, 2026Read →

Cybersecurity11 min read

Pre-Launch Security Checklist for Solo Developers and Indie Hackers

The 15-item security checklist written for solo founders launching next week — not a Fortune 500 security team. Custodia automates 11 of 15. In priority order.

Pre-LaunchOWASP Top 10Secrets & Auth

April 2, 2026Read →

OWASP LLM10 min read

Prompt Injection Prevention: Stop LLM01 Attacks Before They Ship

Prompt injection is the #1 OWASP LLM vulnerability. This guide covers direct and indirect injection, RAG-specific attack paths, layered defenses, and how to detect vulnerable patterns before release.

LLM01 Prompt InjectionIndirect InjectionRAG Security

March 27, 2026Read →

EU AI Act11 min read

EU AI Act Compliance Checker for Developers: Automate Risk Assessment & Audit Readiness in One CLI Command

The EU AI Act is in force. Articles 9, 13, 14, and 52 impose real technical obligations on developers shipping AI features — and no existing scanner checks any of them. Here's a complete technical guide and a tool that does.

Art. 9 Risk MgmtArt. 14 OversightArt. 52 Disclosure

SQL InjectionBroken Access ControlXSS

OWASP Top 10 Code Review Guide: How to Find SQL Injection, Broken Access Control & XSS in Your Codebase

Manual code reviews miss 60% of OWASP Top 10 vulnerabilities. This guide covers the exact patterns to look for in Node.js, Python, and Go — plus how to automate detection so nothing slips to production.

OWASP Top 10OWASP LLMGitHub Actions

CLI Guides8 min read

Integrate a Security Scanner into GitHub Actions: OWASP CI/CD Pipeline Guide

Add OWASP Top 10 + OWASP LLM Top 10 scanning to your GitHub Actions pipeline. Block PRs on critical findings with a complete, production-ready YAML template.

SOC 2 Type IICC6 Logical AccessCC7 System Ops

AI Compliance12 min read

SOC 2 for AI Companies: What Auditors Actually Check in Your Code

SOC 2 auditors are now asking AI companies for evidence beyond access logs. CC6, CC7, and new AI-specific criteria require code-level artifacts. Here is exactly what to prepare.

Hardcoded SecretsPrompt InjectionBroken Access Control

Cybersecurity8 min read

Vibe Coding Security Risks: What Cursor and Claude Can't Catch

AI editors ship working code — not audited code. Vibe-coded projects consistently contain 4 vulnerability classes: hardcoded secrets, prompt injection, broken access control, and insecure output handling. Here's how to find them.

AI Code SecurityOWASP LLM01Broken Access Control

Is AI Generated Code Secure? What We Found Scanning Real Projects

AI generated code is not inherently insecure — but it is systematically undertested for security before it ships. After scanning AI-generated projects, the same 4 vulnerability classes appear in almost every codebase.

April 14, 2026Read →

OWASP LLM10 min read

Securing MCP Servers: Attack Surfaces in AI Tool Use

Model Context Protocol gives AI agents real power over your environment — filesystem access, shell execution, API calls. Most developers ship MCP servers without a single security review. Here are the 5 attack surfaces and how to lock them down.

LLM01 Prompt InjectionLLM08 Excessive AgencyTool Poisoning

Red TeamingCBRN UpliftJailbreak Analysis

AI Compliance9 min read

How OpenAI Red Teams GPT-4: Inside the Process of Breaking Their Own Model

Before GPT-4 launched, OpenAI paid 50+ external experts — biosecurity researchers, ex-intelligence officers, disinformation specialists — to spend months trying to break it. Here's what they found, what they fixed, and what they shipped anyway.

Constitutional AIRLAIFAlignment Faking

AI Compliance8 min read

Inside Constitutional AI: How Anthropic Bakes Security Into Claude Before It Ships

Anthropic built a system where Claude critiques and rewrites its own outputs against a set of principles before you ever see them. Here's how Constitutional AI actually works, what attack classes it stops, and the one thing it's completely blind to.

Data ExfiltrationPrompt InjectionSystem Prompt Leak

The AI Data Breaches Developers Need to Know About: Samsung, Slack, and the Real Incidents

Samsung engineers leaked source code into ChatGPT. Slack AI got weaponized through a DM. A Bing chatbot revealed its secret identity. These aren't hypotheticals — they all happened, and every one has a direct lesson for developers building AI products today.

Data IsolationSecrets PreventionAudit Logging

How GitHub Secured Copilot for 77,000 Companies: The Architecture You Never Knew Existed

To get enterprise buy-in, GitHub had to solve problems no developer tool had faced before: cross-tenant code leakage, licensing liability, secret suggestion prevention, and full audit logging. Here's how they actually built it — and what it still can't do.