Fail loudly inside, quietly outside.
Production-ready error handling that does not leak internals — full diagnostics where your team can see them, and nothing useful to an attacker in the response.
1. Errors are information disclosure
A stack trace, a database error, or a verbose exception returned to the client is a gift to an attacker: it reveals frameworks, versions, table names, file paths, and the exact shape of your internals. Verbose errors are a recurring source of the reconnaissance that precedes a real exploit. The response must say enough to be useful to a legitimate caller and nothing that helps an attacker map the system.
2. Diagnostics for you, opacity for them
Good error handling is two-faced by design: rich, correlated diagnostics captured server-side where your team and your telemetry can use them, and a clean, generic, correlation-ID-bearing response to the client. The user can quote the ID to support; the attacker learns nothing from it.
3. How B5 Secure handles it
B5 Secure ships production-ready error handling that keeps internals out of responses while preserving the diagnostics operators need — consistent with treating error messages, timing, and response shape as information disclosure to be controlled, not conveniences to be left on.