File attributes are specific properties of a file. Use two
file attributes when defining data identifiers: file type and file size. For
example, a software development company may want to limit the sharing of the
company's software installation package to the R&D department, whose members are
responsible for the development and testing of the software. In this case, the
IMSVA administrator can create a policy that
blocks the transmission of executable files that are 10 to 40 MB in size to all
departments except R&D.
Trend Micro recommends combining file attributes with other DLP data
identifiers for a more targeted detection of sensitive files because file
attributes, by themselves, are poor identifiers of sensitive files. Continuing the
preceding example, third-party software installation packages shared by other
departments will most likely be blocked.
