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Security-First SaaS Development Blog

Security-first guides for building SaaS that ships safe.

TutorialComparisonSecurityGuideTechnical
Apr 4, 2026·Tutorial

Next.js 'use cache' Directive: Complete Guide [2026]

Next.js 16 replaced implicit caching with opt-in 'use cache'. Learn the three directives, cacheLife profiles, and real SaaS patterns.

Mar 30, 2026·Comparison

Supabase vs Firebase in 2026: Which Backend for Your SaaS?

An honest comparison of Supabase and Firebase for SaaS developers. Covers database architecture, security, auth, pricing at scale, and developer experience.

Mar 23, 2026·Tutorial

Rate Limit Next.js Server Actions Before Abuse

Server Actions are public HTTP endpoints anyone can call. Here's how to add rate limiting to login, checkout, and contact forms.

Mar 20, 2026·Tutorial

Next.js proxy.ts Auth: Protect Routes with Supabase

Next.js 16 renamed middleware.ts to proxy.ts. Here's how to migrate your Supabase route protection and understand what actually changed.

Mar 16, 2026·Security

Next.js Security Checklist: 12 Steps [2026]

A production security checklist for Next.js apps. Covers HTTP headers, CSP, environment variables, Server Actions, RLS, webhook verification, and more.

Mar 12, 2026·Security

Exposed API Keys: How AI Tools Leak Your Secrets

Claude Code CVEs, Google's $82K API key incident, 5,000+ repos leaking ChatGPT keys. Learn how AI tools expose your secrets and how to lock them down in Next.js.

Mar 7, 2026·Guide

Next.js SEO for SaaS: The Complete 2026 Guide

A security-first guide to SaaS SEO in 2026. Learn how to leverage Next.js rendering, structure high-intent pages, and protect your app from indexing leaks.

Mar 3, 2026·Security

Vibe Coding Security Checklist: Audit AI Apps [2026]

Vibe coding tools like Cursor and v0 build apps fast, but they often ship vulnerabilities. Here is the technical audit checklist for Next.js and Supabase apps.

Mar 1, 2026·Tutorial

Send Emails in Next.js with React Email + Resend

Stop writing HTML strings for emails. Learn how to build type-safe, component-based email workflows in Next.js using Resend and React Email.

Feb 26, 2026·Tutorial

Supabase Auth in Next.js App Router [2026 Guide]

Server-side Supabase auth in Next.js App Router. Move beyond outdated client-side patterns with production-ready code.

Feb 22, 2026·Tutorial

Add Stripe Payments to Next.js with Server Actions

A production-ready guide to integrating Stripe one-time payments in Next.js 15 with Server Actions, Zod validation, webhooks, and automated email delivery.

Feb 21, 2026·Security

170+ Vibe-Coded Apps Got Hacked: Secure Your Supabase

The Lovable hack exposed 170+ apps through missing RLS. Here's what went wrong and the exact steps to secure your Supabase database.

Feb 19, 2025·Security

Why Security-First Matters for Your SaaS

Most SaaS templates expose your database to the browser. Here's why that's dangerous and how SecureStartKit does it differently.

Feb 18, 2025·Tutorial

Getting Started with SecureStartKit

Set up your SecureStartKit SaaS template in under 10 minutes. Clone, configure, and deploy.

Feb 17, 2025·Technical

The Modern SaaS Stack: Next.js 15 + Supabase + Stripe

Why Next.js 15, Supabase, and Stripe make the ideal stack for building SaaS products in 2025.

Feb 16, 2025·Tutorial

How to Ship a SaaS in a Weekend

A step-by-step guide to going from idea to deployed SaaS product in a single weekend using SecureStartKit.

Feb 15, 2025·Comparison

Next.js SaaS Templates Compared: An Honest Review

How SecureStartKit compares to other popular Next.js SaaS starters on security, features, and developer experience.

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