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## Data Leakage Prevention

For convenience, ScanMail includes default content filtering data leakage prevention policies. There are 10 default data leakage prevention policies configured by region. Compared to standard content filtering policies, keywords in the data leakage prevention policies are regular expression description strings and not the actual keyword.
For example, IBAN is the description for the regular expression:
`[^\w](([A-Z]{2}\d{2}\s?)([A-Za-z0-9]{11,27}|([A-Za-z0-9]{4}\s){3,6}[A-Za-z0-9]{0,3}|([A-Za-z0-9]{4}\s){2}[A-Za-z0-9]{3,4}))[^\w]`
Messages that contain the string "IBAN" do not trigger this policy. Strings such as "BE68 5390 0754 7034 " match the regular expression and trigger this policy.