Best way to exclude legitimate behaviours

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BenHooper
L1 Bithead

Best way to exclude legitimate behaviours

When it comes to excluding legitimate behaviours from BIOC rules, as far as I can see, there are 3 options:

  1. Modify the BIOC rule itself adding "not equal to" logic.
  2. Add BIOC rule exclusion at https://<organisation>.xdr.eu.paloaltonetworks.com/rules/exceptions
  3. Add incident / alert exclusion at https://<organisation>.xdr.eu.paloaltonetworks.com/exclusion

What is the recommended way and differences between these methods?

Thanks.

BenHooper
L1 Bithead

While I'm awaiting a reply, just so others know, a side effect of modifying an existing BIOC rules is that a significant number of its alerts / incidents get re-created.

DJohnson84
L1 Bithead

BenHooper,

 

I'm not saying this is the "recommended" way for excluding legitimate behaviors,  but what I have done so far.

When an alert is created, and verifying that it is legitimate, I add it as an alert exclusion.

The thought being that the alert exclusion would be a smaller print versus excluding the whole BIOC rule.

 

Hope that helps,

DJohnson84

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