Is Tessian EU down?

Status: Investigating Proofpoint is recovering from an issue impacting multiple services: https://proofpoint.my.site.com/community/s/article/Proofpoint-Service-Interruption-Affecting-Cloud-Service-Portal-Access-04-SEP-2026 As a knock on effect, we have seen a slight delay in a small number of post delivery checks. The system is currently recovering and we will update once all systems are operational. Affected components Core Email Protection API (Degraded performance)

Status: Resolved As the team continues to review and monitor, they no longer see any delays on the EU Sever. Affected components Core Email Protection API (Operational)

Status: Identified We've identified an issue impacting the following service and scenario: • For Adaptive Email DLP Custom Policies • Set to Silently Track • Configured to send Compliance Alerts • And scanned by the Gateway Since September 1, 2026, at 12:30 PM UTC - Compliance Alerts were not sent for policies set to Silently Track and configured to send them, when the check was done by the Gateway. Polices set to Warn, or checks done by other integrations, have no impact and Compliance Alerts function as expected. Our team is actively correcting the issue and all Alerts will be send momentarily. If you were impacted, you will notice the backlog of alerts come in all at once. We will update once complete. Affected components AEDLP Custom Policies (Degraded performance)

Status: Resolved A fix has been applied to all customer Gateways. Compliance Alerts are now sending as expected on Custom Policies set to Silent Track which are checked by the Gateway. All backlogged Compliance Alerts impacted by this issue have now sent. If you have any additional questions, please feel free to raise a support case. Affected components AEDLP Custom Policies (Operational)

Status: Resolved We experienced an issue resulting in inbound check delays and outbound check timeouts. Impact window: Aug 5 2026: 14:00 to 17:00 UTC Impact: • Core Email Protection API: • During the window, inbound message checks may have been delayed, resulting in corresponding delays in a message being actioned and available in the portal. • Adaptive Email DLP: • During the window, outbound messages checks by the Office Add-in may have been delayed, resulting in slightly elevated timeouts. • Up to 5% of checks may have timed out and failed open via the Add-in. Our team worked quickly to take steps to address the issue and it is since resolved. Please feel free to open a support case with any additional questions. Affected components M365 Add-in (Operational) Gateway (Operational) Core Email Protection API (Operational) Investigate and Respond - Email Search (Operational) Reported Emails (Operational) Proofpoint Cloud Email Security Platform (Operational) AEDLP Email Exfiltration Protection (Operational) AEDLP Email Misdelivery Protection (Operational) COM Add-in for Windows (Operational) Proofpoint API (Operational) Proofpoint Portal (Operational) AEDLP Custom Policies (Operational) Core Email Protection API (Operational)

Status: Monitoring We identified an issue impacting a subset of customer's Adaptive Email DLP Gateway. Impacted customers may have experienced a delay in end users receiving Held email notifications. Impact: • Starting July 22nd 2026 ~10:00 UTC, when an email triggered a policy and was held by the Adaptive Email DLP Gateway, the end user (sender) may not have received a timely notification that their email was held by the Gateway. • This would delay users from replying to the Held email notification and releasing the original email to the intended recipient. Proofpoint Engineering identified the issue and deployed a fix. Through close monitoring, we see new email held notifications sending without delay, and previously delayed notifications being delivered. We will continue to monitor to ensure all end user notifications are being sent as expected. Please feel free to open a support ticket with any additional questions or concerns. Affected components Gateway (Degraded performance)

Status: Monitoring Proofpoint continues to monitor, and has seen no reoccurrence of the initial issue. We have identified a lingering cosmetic issue within customer portals. Under the Gateway > Monitoring tab, customers may observe an abnormally high number of "Pending delivery" emails back to their mail server. • Emails which were held during the initial issue are incorrectly showing in this tab. • Checking our backend mail logs, we can confirm these emails have been successfully delivered back to your server, even though they may still show in the UI. • Customers are welcome to double check by doing a mail trace against the message ID We are currently working on a fix, and will hold this open in a monitoring state until the number of Pending delivery entries is corrected in customer portals is corrected. Affected components Gateway (Operational)

Status: Monitoring As of 10:00 UTC July 24th 2026 - the remaining UI issue with the "Pending delivery" tab incorrectly showing emails which had already been delivered has been resolved. Please feel free to open a case with any additional questions and concerns. Affected components Gateway (Operational)

Status: Resolved After extended monitoring through the week, there have been no additional delays is sending held emails. Please open a new case if you observe any new issues, we're happy to help. Affected components Gateway (Operational)

Status: Investigating We are aware of an issue affecting EU portal logins on Google chrome. We are currently working with Google to have this reclassified as safe. At present, the issue appears limited to Google Safe Browsing, primarily impacting EU tenants. Other browsers, such as Safari and Firefox, are generally not affected, although some Safari users may see warnings depending on their security settings. Affected components Proofpoint Portal (Degraded performance)

Status: Investigating We are aware of an issue affecting EU portal logins on Google Chrome. We are currently working with Google to have this reclassified as safe. At present, the issue appears limited to Google Safe Browsing, primarily impacting EU tenants. Other browsers, such as Safari and Firefox, are generally not affected, although some Safari users may see warnings depending on their security settings. Please note that the site itself is not compromised, and this warning is due to a misclassification. Affected components Proofpoint Portal (Degraded performance)

Status: Identified Google has applied an Emergency Allowlist for the EU portals, which should immediately stop "Dangerous site" warnings from appearing to users in Chrome and other browsers using Google Safe Browsing. This action is a temporary fix while Google investigates the root cause of the false positive. Their product engineering team is working on a permanent resolution. Testing from multiple stakeholders now shows that the error is gone in Chrome, Safari, and Firefox. Google has also confirmed that the EU portal  is no longer listed as dangerous on their Transparency Report. We are checking with impacted customers to confirm the resolution from their side. Please report any continued issues so we can escalate with Google if needed. Affected components Proofpoint Portal (Degraded performance)

Status: Resolved Proofpoint has confirmed the Emergency Allowlist has resolved the issue for impacted customers. We will continue to work with Google to understand what caused the false positive and prevent such issues in the future. Please feel free to open a support case if you have any additional questions. Affected components Proofpoint Portal (Operational)