Hello
Id like to look into fine tuning our DLP (11.1) discover policy to reduce false positives.
What Id like to acheive seems simple, apply the Luhn algorithm to number strings greater than 13 digits, just to rule out phone numbers and most case #s.
Currently I am using the CCN data identifier with Medium settings: Exclude exaxt match/Luhn Check/Number Delimiter.
I read AR Sharmas post for beginners and he says (loose quote) we can add an "expression for digits". What kind of expression would limit the discovery to numeric strings greater than x? Would it just be \d(>13)? Or an IF statement? Im no programmer but a hint would help me a lot.
Looking at the easiest options I could add an "Exclude Prefix" validator for area codes that dont conflict with a BIN #. But I see there is also a custom Script option, would that be where I could limit the # of digits?
Thanks in advance
Rob