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Trend Micro InterScan Messaging Security Virtual Appliance Administrator’s Guide
Compliance Template Keyword Lists
14-28
TABLE 14-1. Predefined Expressions (Continued)
NAME ADDITIONAL VERIFICATION
US - Dollar Amount None
US - HIC (Health Insurance
Claim)
US - NPI (National Provider
Identifier)
IMSVA comes with a set of predefined keyword lists. These keyword lists cannot be
modified, copied, exported, or deleted. Each list has its own built-in conditions that
determine if the template should trigger a policy violation.
How Keyword Lists Work
IMSVA verifies a valid Health Insurance Claim
(HIC) suffix letter. The HIC number has one or two
suffix letters.
IMSVA verifies the National Provider Identifier
(NPI). The NPI has its own checksum based on
the Luhn algorithm, which is widely used for validating
identification numbers. IMSVA also verifies
the expression’s checksum.
US - Phone Number IMSVA checks the area code against a dictionary
of collected US area codes.
US - SSN (Social Security
Number)
IMSVA validates a 9-digit number by checking its
area code and group number and then matching it
against invalid SSNs identified by the U.S. Social
Security Administration (SSA).
Number of Keywords Condition
Each keyword list contains a condition that requires a certain number of keywords be
present in a document before the list will trigger a violation.
The number of keywords condition contains the following values:
• All: All of the keywords in the list must be present in the document.
• Any: Any one of the keywords in the list must be present in the document.