Security News
Cisco-owned multi-factor authentication provider Duo Security is investigating an ongoing outage that has been causing authentication failures and errors starting three hours ago. The outage also led to Core Authentication Service issues across multiple Duo servers, triggering Azure Auth authentication errors for Azure Conditional Access integrations in a systemwide outage.
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Microsoft Sharepoint and OneDrive for Business were briefly interrupted today after a German TLS certificate was mistakenly added to the main.com domains for the Microsoft 365 services. At approximately 3:08 PM ET today, a Microsoft 365 advisory 'SP659992' warned that users may be unable to access SharePoint Online and OneDrive for Business.
We and our store and/or access information on a device, such as cookies and process personal data, such as unique identifiers and standard information sent by a device for personalised ads and content, ad and content measurement, and audience insights, as well as to develop and improve products. With your permission we and our partners may use precise geolocation data and identification through device scanning.
We and our store and/or access information on a device, such as cookies and process personal data, such as unique identifiers and standard information sent by a device for personalised ads and content, ad and content measurement, and audience insights, as well as to develop and improve products. With your permission we and our partners may use precise geolocation data and identification through device scanning.
Microsoft is investigating an ongoing issue preventing some customers from accessing their Exchange Online mailbox through Outlook on the web. While Microsoft says this outage only impacts the North American region, user reports show that the issue might also affect users in South America.
The Associated Press reported that in response to its inquiries about the cause of the outage, Microsoft admitted that Anonymous Sudan and DDoS orchestrated by the group were the cause of the outages. The post that the AP claims is Microsoft's admission of succumbing to Anonymous Sudan doesn't mention the source of the DDoS - but does state: "Beginning in early June 2023, Microsoft identified surges in traffic against some services that temporarily impacted availability. Microsoft promptly opened an investigation and subsequently began tracking ongoing DDoS activity by the threat actor that Microsoft tracks as Storm-1359.".
Microsoft has confirmed that recent outages to Azure, Outlook, and OneDrive web portals resulted from Layer 7 DDoS attacks against the company's services. The outages occurred at the beginning of June, with Outlook.com's web portal targeted on June 7th, OneDrive on June 8th, and the Microsoft Azure Portal on June 9th. Microsoft did not share at the time that they were suffering DDoS attacks but hinted that they were the cause, stating for some incidents that they were "Applying load balancing processes in order to mitigate the issue."
Microsoft revealed in an update to the Azure status page that the preliminary root cause behind an outage that impacted the Azure Portal worldwide on Friday was what it described as a traffic "Spike." Customers who wanted to access the Azure Portal on Friday afternoon at portal.
Outlook.com is suffering a series of outages today after being down multiple times yesterday, with hacktivists known as Anonymous Sudan claiming to perform DDoS attacks on the service. This outage follows two major outages yesterday, creating widespread disruptions for global Outlook users, preventing users worldwide from reliably accessing or sending email and using the mobile Outlook app.