Refusal: "Opus 5.5's safeguards flagged this session. You may be seeing this for the first time on an Opus model: Opus 5.5 is more capable and has stronger safeguards as a result, which can sometimes flag non-cybersecurity work. We're improving these safeguards to reduce the amount of incorrectly flagged messages."

My appeal: "This is my own code, my TST and PRD environments and I am concerned about the hardening the hand-rolled BasicAuthHttpModule function.

I asked DeepSeek V41 Flash to review this code already and worked in his recommendations.

Now I want to ask you for a second round of review, a second opinion audit.

This is an ASP.NET 4.8 application facing internet and I want to make sure I handle the edge case, HTTP error codes, and have no logic gaps in my code."