Cisco Cisco Email Security Appliance C160 Mode D'Emploi

The following examples show how classifiers match message content:

Several DLP policy templates include the Credit Card Number classifier. The credit card number itself 
is subject to various constraints, such as the pattern of digits and punctuation, the issuer-specific prefix, 
and the final check digit. The classifier requires additional supporting information to make a match, such 
as a second credit card number, an expiration date, or the name of the card issuer. This reduces the 
number of false positives.

Examples:

4999-9999-9999-9996

 (No match because of no supporting information)

4999-9999-9999-9996 01/09

 (Match)

Visa 4999-9999-9999-9996

 (Match)

4999-9999-9999-9996 4899 9999 9999 9997

 (Match because of more than one credit card number)

The US Social Security Number classifier requires a properly formatted number as well as supporting 
data, such as a date of birth, name, or the string 

SSN

.

Examples:

321-02-3456

 (No match because of no supporting information)

321-02-3456 July 4

 (Match)

321-02-3456 7/4/1980

 (Match)

321-02-3456 7/4

 (No match)

321-02-3456 321-02-7654

 (Match because of more than one SSN)

SSN: 321-02-3456

 (Match)

Joe Smith 321-02-3456

 (Match)

321-02-3456 CA 94066

 (Match)

The ABA Routing Number classifier is similar to the Credit Card Number classifier.

Examples:

119999992

 (No match because of no supporting information)