We will be making a change to the web application firewall Tuesday, 2/19 at 12 pm EST. You should not be impacted by this change at all and there is no expected downtime whatsoever for this change.
This will provide another layer of protection. With this type of change there is always a possibility that it may block some legitimate requests. So, after 12 pm EST Tuesday, if you are unable to access any pages you had previously been able to access or see any errors that say '403 or 'Forbidden', please let us know. We will be monitoring the logs during this time to try to combat any false-positives.