The Security Basics Every MVP Needs Before Launch

Founders building their first product tend to land on one of two extremes: ignore security entirely until something breaks, or try to build SOC 2-level infrastructure before they have ten users. Neither is right. There's a short, non-negotiable list of basics that cost almost nothing to get right early and cost a great deal to retrofit later.

Start with authentication and secrets. Passwords hashed with a modern algorithm (not MD5, not plain SHA), environment variables for every API key and credential, never committed to source control, ever, and a clear separation between what a logged-in user can see versus what an admin can see. This sounds obvious until you look at how many early-stage products get this wrong because "we'll fix it before launch" quietly became "we shipped it as-is."

Second: input validation at every boundary where your system talks to the outside world, form submissions, API requests, file uploads, webhook payloads. This is where SQL injection, XSS, and most of the OWASP Top 10 actually live. It is far cheaper to validate correctly the first time than to patch every endpoint after a scan flags them.

Third: know what data you're actually storing, and encrypt what needs it, in transit always (HTTPS is not optional), and at rest for anything sensitive: payment details, health information, personal identifiers. If you don't need to store it, don't. The safest data is data you never collected.

Fourth: logging and monitoring that would actually tell you if something went wrong. Not exhaustive observability, just enough that a compromised account or an unusual spike in requests doesn't go unnoticed for three months.

None of this requires a security team or a six-figure budget. It requires treating these four things as part of the MVP's definition of done, not as a phase-two nice-to-have. The startups that get burned aren't the ones that moved fast, they're the ones that moved fast past these specific basics.