codient

Web authentication is the gatekeeper for every app you build — and most developers get it wrong in ways they don't discover until someone else does. In 2025, a single breach exposed 16 billion login credentials. Not sixteen thousand. Not sixteen million. Sixteen billion. That's roughly two sets of credentials for every person on Earth. The companies caught up in it weren't reckless startups. Many were established businesses with login pages that looked perfectly normal — a username field, a password field, a submit button. The scary part isn't the breach itself. It's that a lot of those systems worked exactly as designed. The developers built auth. It logged users in. It logged them out. It passed QA. What it didn't do was survive a real attacker. The gap between "authentication that works" and "authentication that holds" is where breaches live. This article shows you how to close that gap. Key Takeaways Web authentication i...