Pattern File Numbering

To allow you to compare the current pattern file in your software products to the most current pattern file available from Trend Micro, pattern files have a version number.

There are two pattern file numbering systems currently in use at Trend Micro.

1. The traditional pattern file number is three-digits, in the format xxx, for example, 786.

2. The new pattern file numbering system, which came into use during 2003, uses six-digits, in the format x.xxx.xx.

For the file pattern number 1.786.01:

• The first digit (1) indicates the new numbering system.

• The next three digits (786) represent the traditional pattern file number.

• The last two digits (01) provide additional information about the pattern file release for Trend Micro engineers.

Be sure to keep your pattern file updated to the most current version to safeguard against the most current threats.