This morning from approximately 8:00 am to 8:40 am (EST), Revision Assistant experienced downtime while our teams worked to fix a security issue. During that time, students working in Revision Assistant received error messages or were unexpectedly logged out of the system. The security issue has been resolved and Revision Assistant is working properly again. We apologize to any students and institutions who were affected by this unplanned maintenance. We take user experience very seriously and will work harder to make sure this does not happen again in the future.