Sumsub outage history

Description: On October 12, 2026, between 08:28 and 08:45 UTC, a technical issue on our side affected face matching. During this time, applicants whose verification included a face match check were asked to resubmit their documents with the “Bad face matching” reason. The issue has been fixed, and face matching works as expected. What to do: No action is needed on the applicant’s profile. When affected applicants return to verification, they will see a message that their face is not clearly visible and will be asked to resubmit their identity document and selfie. After that, they will be verified as usual. You may want to let these applicants know they need to complete verification again. We apologize for the inconvenience.

We are investigating reports of connectivity issues affecting some end users in Vietnam. Affected users may fail to load the verification flow or the liveness/selfie step, or get connection errors in the Mobile or Web SDK. Verification from other regions or countries is not affected. We will post an update as soon as we have more information.

Some internet providers in Vietnam are currently blocking connections to our services. As a result, some end users in Vietnam may be unable to load the verification flow or finish the liveness/selfie step. The impact is limited to a small number of users on the affected networks. As a workaround, affected users can switch to a different network (for example, mobile data from another provider) or use a VPN to complete verification. Clients with VPN/proxy restrictions enabled may want to review flagged applicants from Vietnam during this period. We are investigating the cause internally. We will post updates on this incident weekly, and sooner if there is significant progress.

We are continuing to work on the connectivity issues affecting some end users in Vietnam. Our team is engaging with the affected internet providers individually to determine the cause of the blocking and to restore access. There are no further updates at this time. The workaround remains the same: affected users can switch to a different network (for example, mobile data from another provider) or use a VPN to complete verification. Clients with VPN/proxy restrictions enabled may want to review flagged applicants from Vietnam during this period. We will keep you informed and post the next update as soon as there is meaningful progress.

Between 13:23 and 15:13 UTC, we experienced a temporary issue affecting applicant search functionality. As a result, some applicant search requests in the Dashboard and CSV exports may have been unavailable or returned errors. New verifications continued to be created and processed during this period. The issue has been fully resolved.

Between 08:15 and 08:28 UTC, we experienced a complete service outage. The incident was caused by a software bug in a critical code path handling all API requests, which was triggered by a configuration change. The issue has been resolved and the service has been restored.

We are currently monitoring intermittent issues with our AML screening provider, ComplyAdvantage. Customers utilizing the default ComplyAdvantage CSOM service may experience delays or errors with AML Screening, which could temporarily increase overall applicant verification times. The service has experienced brief spikes in errors since 14:52 UTC, followed by temporary recovery. While the system is currently functioning normally, we are actively monitoring the situation closely and will provide updates as needed.

We are continuing to monitor for any further issues.

Errors are occurring sporadically, and overall error counts remain low; most applicant screenings are processing normally. Applicants affected during this window are being automatically re-screened by our system to ensure processing is completed.

The intermittent issue has been fully resolved. Systems have been operating without issue for over 30 minutes. All applicants affected during the brief degradation window were automatically re-screened and processed successfully. All AML screening services are now functioning normally.

Between 07:02 and 07:15 UTC, some users may have encountered a 403 Forbidden error when initializing the SDK, which prevented applicant verification requests from being processed. The root cause of the issue is related to developed feature misconfiguration that caused the feature to be applied more broadly than intended. Our monitoring systems detected the unexpected behavior, and the change was disabled within several minutes We identified the underlying issue and implemented a fix. The issue has been fully resolved. This incident is being reported retrospectively for transparency.

We identified and resolved an issue that caused TM creation requests to return 400 errors when the transaction included an invalid full name. This affected only a limited number of transactions where the full name value was incorrect. Transactions with valid full name data were not impacted. As the affected requests failed validation before transaction creation, no affected transactions were created in our system. Affected transactions need to be recreated by the client. This incident is being reported retrospectively for transparency. UTC time: 8:08 - 9:05

Our Support systems are currently experiencing outage caused by a failure at our infrastructure provider. As a result, all messaging channels and ticketing workflows are unavailable. Slack, Telegram and Dashboard chats are non-functional. Messages are not reaching Support Team. Ticket creation — blocked. New tickets cannot be created via any channel. Existing ticket replies — not visible to the support team. Customer replies on open tickets are not appearing in our systems The issue is on the provider's side and is outside our control. Although no ETA available at this time, we are actively investigating with our provider to return service back to operational state.

The infrastructure provider confirmed an incident and currently investigating the root cause. Ticketing functionality is restored, all previous messages can be resubmitted and processed by the support team.

We are currently investigating an issue where our public documentation site is not loading. The issue appears to be related to an external documentation platform outage. There is no impact on Sumsub product functionality or business operations. Our team is monitoring the situation and will provide an update once more information is available.

This incident has been resolved.

We are currently investigating an issue affecting access to some sections of the Admin Panel for users with a specific account role. The impact appears to be limited. Our team is checking the root cause and will provide an update once more information is available.

The issue has been fixed, and access to the affected Admin Panel sections has been restored. The incident was caused by a very specific edge-case bug affecting only a limited role configuration. No broader impact has been identified.

Between 15:00 and 15:13 UTC, we experienced a brief service disruption caused by a Cloudflare DNS timeout. During this period, a small amount of requests failed with 5XX errors. The issue has been resolved, and services are operating normally. We apologize for the inconvenience and appreciate your patience.

We are currently experiencing another DDoS attack affecting parts of our infrastructure and service availability. Our engineering and infrastructure teams are actively applying mitigation measures and closely monitoring platform stability. Some services may experience intermittent disruptions or increased response times during this period. We will continue to provide updates as more information becomes available.

We have identified ongoing DDoS attack activity affecting parts of our infrastructure, which may result in intermittent service disruptions and increased response times for some customers. Our engineering and infrastructure teams are actively working on mitigation measures and continuously monitoring platform stability. We are prioritizing service availability restoration and will continue providing updates as the situation evolves.

The source of the ongoing DDoS attack has been identified, and mitigation measures have been applied to minimize the impact on platform stability and service availability. Our teams continue to closely monitor the infrastructure and traffic patterns. While the situation has stabilized, some intermittent disruptions may still occur during the monitoring period.

Our Team is still implementing anti-DDoS measures and actively monitoring the situation. The bot traffic pattern observed is specifically designed to bypass standard protection layers, including Cloudflare/CloudFront solutions typically used to mitigate such hybrid attacks. Our engineering team has been actively implementing additional in-house mitigation measures to manage and reduce the impact. The situation remains under close monitoring. Our API, SDK, and Sumsub domain continue to operate without major interruptions, with only occasional short-lived disruptions (typically lasting up to 5 minutes) during the rollout of additional protection measures in response to evolving attack patterns. Our teams remain fully engaged in mitigation and stabilization efforts.

The incident has been resolved, and service stability has been fully restored. Mitigation measures have been applied, and our teams have confirmed normal platform operation. We will continue monitoring the infrastructure, and a detailed incident review will follow internally. Thank you for your patience and understanding.

Our service is currently being targeted by a DDoS attack. Our Team is implementing counter measures at the moment. We will keep you posted.

The DDoS attack activity has subsided, and our services are currently operating normally. Our teams continue to closely monitor the platform to ensure ongoing stability and respond quickly to any further abnormalities.

We are continuing to monitor for any further issues.

The incident has been resolved, and all services are operating normally. Our teams will continue monitoring the platform to ensure ongoing stability. We appreciate your patience and understanding throughout the incident.

Our service is currently being targeted by a DDoS attack. Our Team is implementing counter measures at the moment. We will keep you posted.

We have succesfully identified and blocked the source of attack. Currently the Team is reviewing the attack aftermath. All systems are up and operational. We will keep monitoring the situation for some additional time to ensure the incident is fully addressed. Thank you!

Our Team has succesfully concluded the incident resolved. Everything is now operational. The attack took place between 07:15 UTC and 8:00 UTC. During the attack, we received a spike of 20–30x increase in total requests. The attack is still ongoing; However, our Team has mitigated it for now and are working with Cloudflare on a more reliable permanent solution. If you have any questions, please, don't hesitate to contact Support.

We are currently investigating an issue affecting our Support integration in Slack. The integration had stopped working as expected, and some tickets were being closed automatically without manual action. Our team has restored the normal operations. The affected tickets will be automatically re-opened and taken back into work without any manual actions from your side. We are continuing to investigate the root cause of the issue and apologize for any inconvenience this may have caused.

We will continue to monitor for any further issues to ensure the problem is completely resolved.

We are pleased to confirm the system was operational for the last 12 hours. The root cause has been identified and a permanent fix has been implemented. All affected support tickets were reopened and processed. Our team is available through all the usual channels to assist you. Thank you for your patience throughout this process!

Between 2026-03-26 11:07 UTC and 2026-03-26 12:50 UTC, we experienced a minor issue affecting PDF report generation. During this time, applicant PDF exports may have been incomplete. The issue has now been fully resolved. If your PDF report contains blank sections, missing pages, or looks incomplete, please generate the PDF report again. We apologize for any inconvenience caused. Please, contact our Support Team in case you have any questions!

The incident affecting incoming client messages has been resolved. All systems are now operating normally.

We are currently experiencing infrastructure issues in the UAE region due to a confirmed power outage at our upstream provider's (AWS) datacenters. Users may experience temporary delays or intermittent availability of verification services, as well as impacted performance and data synchronization. We are closely monitoring the situation and apologize for any inconvenience this may cause. https://health.aws.amazon.com/health/status Other regions are not affected.

The state of UAE AWS infrastructure remains unchanged according to Amazon updates. Our Team stays alert and follows the situation closely.

We are continuing to monitor for any changes with UAE AWS infrastructure availability.

To mitigate the impact of the ongoing AWS power outage affecting the UAE region, we have temporarily launched part of our UAE production infrastructure in the EU region. This allows UAE users to continue operating and submitting verifications while the issue persists. Please note that some data may still be missing or incomplete, as we were not able to retrieve the full dataset from AWS before the outage occurred. As a result, certain records or synchronization states may be partially unavailable at this time. We will continue to monitor the situation closely and will restore full operations in the UAE region once the upstream provider resolves the incident. Thank you for your patience and understanding.

As there is currently no estimated time of resolution from AWS regarding the UAE region outage, we are closing this incident. All affected customers have been successfully migrated to alternative regions shortly after the incident began, and services are fully operational. Our services remain available and can be used as usual — no action is required on your side. Once the upstream infrastructure in the UAE region is restored and stable, we will automatically migrate operations back without disruption. We will continue to monitor the situation internally and appreciate your understanding. Should you have any particular concerns in regards to this incident, please, feel free to reach our Support Team.

Description: Between 15:00 and 18:08 UTC on February 26, 2026, one database node in our EU production cluster experienced network throttling, resulting in increased query latency. This manifested as general interface sluggishness and intermittent API response delays. Root Cause: A spike in traffic triggered AWS network throttling on the affected database instance, leading to degraded performance. Resolution: Traffic was redirected to another instance, restoring normal operation. Next Steps: We are strengthening network monitoring, reviewing instance sizing, and working with the platform team to implement additional traffic control measures to prevent recurrence.

Between 20.02 (12:00 UTC) and 23.02 (18:00 UTC), during a scheduled aggregation tables migration, a configuration inconsistency caused partial data to not be fully reflected in the production aggregation layer. This affected certain rules relying on aggregate expressions for a limited period. Core monitoring and transaction processing were not impacted, and no data loss occurred. The issue has been resolved and aggregation data fully reconciled. Additional validation and automation controls have been implemented to prevent recurrence. As a precaution, we will automatically rescore all transactions evaluated by aggregate-based rules during the affected period. If you have any questions or require assistance, please contact our Support team.