Security testing for teams that have been putting it off

We've done security testing for companies in fintech, healthcare, logistics, and government contracting. The one thing they all have in common is that nobody called us early. They called after something happened, or after an auditor told them something would happen if they didn't fix it. The usual story goes like this: the team builds the product. They ship. Maybe they run unit tests, maybe they have Cypress or Playwright covering the critical flows. Someone at a board meeting asks "what about security?" and a developer says "we use HTTPS." Everyone nods. Months pass. Then a penetration test finds API keys in client-side JavaScript bundles. Or an intern discovers you can modify another user's order by changing an ID in the URL. Or someone runs a scanner and the report is 47 pages long. We hear "we didn't think it applied to us" more often than you'd expect from teams shipping production software. What actually happens when teams skip it The problems aren't abstract. We keep a rough log