Is there a character limit for keyword rules?
When attempting to save a keyword list that is too large, Enforce will throw a CSRF Protection error. This kicks the user out of the policy management and, after clicking the "Return to Enforce" button, brings them back to their DLP home page.
**Please note: there are other causes of the CSRF Protection error, this just happens to be one of them.**
There is not a character limit but there is a keyword limit of roughly 20,000. A keyword can consist of multiple words; in the DLP definition of "keyword" it is a comma or newline separated string. If a keyword list of greater than 20,000 is needed then mutltiple rules can be OR'd together to cover the entire list. For example, to cover 120,000 keywords a total of six or possibly seven policy rules would be required.