Google Message Security for Google Apps Administration Guide - Manual (Page 252)

252 Message Security for Google Apps Administration Guide
Filter Status
Set this policy to ON or OFF. If you turn the policy off, the Disposition setting is
saved.
Disposition
Select the action you want this policy to take on messages that the Social Security
Numbers lexicon captures. For details about dispositions, see “Message
Dispositions” on page 248.
Credit Card Numbers Policy
Use the Credit Card Numbers Policy page to:
• Turn the policy on or off.
• Select a disposition for messages captured by the policy’s lexicon.
Number validity
checking This lexicon also checks sequences of 9 digits to
determine whether they meet the requirements for a
valid U.S. social security number, within the range that
has been allocated. A valid social security number:
• Cannot contain a group of digits that are all 0s,
such as in
000-11-1111 , 111-00-1111 , or 111-11-
0000 .
• Cannot start with the digits 666, or any three-digit
number greater than 728 .
Filtering Accuracy The Social Security Numbers lexicon is designed to
provide a high level of filtering accuracy to help reduce
the risk of exposure of personal information. However,
please note the following:
• Social security numbers can be represented or
formatted in various ways; therefore, this lexicon
may not capture all messages that contain social
security numbers.
• Because this lexicon looks for specific patterns of
numbers, it may match numerical patterns that are
not social security numbers.