Regular expression content classifiers

Regular expression (regex) patterns can be detected within content, such as the pattern of an internal account number, or alphanumeric document code.

When extracted text from a transaction is scanned, the system searches for strings that match regular expression patterns and may be indicative of confidential information.

To create a regular expression classifier:

1. Enter a unique Name for the pattern.
2. Enter a Description for the pattern.
3. Enter the Regular expression pattern (regex) that you want the system to search for, using Perl syntax.

   For syntax and examples, click Help > Explain This Page within the cloud portal, or view the help page at the following link: Regular expression content classifiers.

4. Use the Pattern Testing section of the page to test your regular expression.

   Because regular expression patterns can be quite complex, it is important that you test the pattern before saving it. If improperly written, a pattern can create false- positive incidents.

   1. Create a .txt file (less than 1 MB) that contains values that match this regex pattern. The file must be in plain text UTF8 format.
   2. Browse to the file and click Test to test the validity of your pattern syntax. If the pattern you entered is invalid, you’re given an opportunity to fix it. You cannot proceed until the test succeeds.

You can have up to 100 regular expression classifiers.