Comment by aragoss
9 hours ago
Thanks!
UUIDs: By default—no. Since UUIDs are Hex (limited charset 0-f), they have lower entropy than Base64 secrets. The threshold is tuned to sit safely above UUIDs but below API keys.
Naming: You are totally right. Currently, it focuses on "high-entropy PII" (passwords, auth tokens, session IDs) rather than names or SSNs. "Secrets Shield" might have been more precise, but naming is hard :)
So depending on the context UUID can be PII. Is this something we can customize or adjust?
Yes, absolutely.
You can fine-tune the sensitivity via the PII_ENTROPY_THRESHOLD environment variable.
If you consider UUIDs to be sensitive in your context (or if you are getting false positives), you can adjust the threshold. For example, standard UUIDs have lower entropy density than API keys, so slightly tuning the value (e.g. from 3.8 to 3.2 or vice-versa) allows you to draw the line where you need it.
Is there a way to tell it to just recognize UUIDs and redact those without adjusting the threshold? In our case, UUIDs is just an exception. I think all the other stuff you're doing is correct for our situation.
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