After adding security headers, certain older browsers or clients stopped working.
There are no configuration errors, but compatibility issues keep appearing.
I’m unsure whether this is expected behavior or something I misconfigured.
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After adding security headers, certain older browsers or clients stopped working.
There are no configuration errors, but compatibility issues keep appearing.
I’m unsure whether this is expected behavior or something I misconfigured.
Modern security headers enforce stricter browser behavior that older clients simply don’t support. Headers like Content Security Policy or newer cookie attributes change how browsers interpret and execute content.
This isn’t usually a configuration mistake—it’s a tradeoff. Supporting older platforms often means relaxing security guarantees, while enforcing stronger controls can break outdated clients.
Teams must consciously decide where to draw that line based on risk tolerance.
Takeaway: Strong security and legacy compatibility are often at odds.