Jul 30, 17:30 EDT
Resolved - Update as of 21:00 p.m. UTC: The root cause of this issue was identified as a code change made to the Pardot application. This change has been reverted by deploying previous code. Login and performance issues have been resolved and full service has been restored. Please contact Support at http://success.pardot.com if you encounter any further issues. We sincerely regret any inconvenience you have experienced as a result of this incident.
Jul 30, 17:15 EDT
Investigating - The Salesforce Technology team is currently investigating a service disruption impacting Pardot accounts as of 20:45 p.m. UTC During a service disruption, end users may be unable to access the Pardot service. Updates will be posted here as new information becomes available.