Microsoft admits that a cyberattack disrupted Microsoft 365 services

On June 5th, 2023, 365 experienced a cyberattack that disrupted its services, including Outlook and its cloud platform. The attack was a denial-of-service (DoS) attack, which is a type of cyberattack that floods a network or server with traffic to make it unavailable to users. spotted the interruption. Its report reveals that Microsoft 365, including Word and Excel, suddenly experienced a large-scale downtime problem. It also claims that at least 15,000 users' services such as e-mail were down. Also, the event lasted for more than two hours and the next morning, it happened briefly again. Microsoft has now officially confirmed that the disruptions were caused by cyberattacks.

Microsoft Office 365

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The company said that the outage affecting some of the company's services earlier this month was caused by a cyber attack. However, it also claims that it did not find any traces of user data being stolen. Microsoft also said it has launched an investigation and started tracking the DDoS campaign launched by threat actor Storm-1359. The company wrote in a blog post

“Beginning in early June 2023, Microsoft has observed a surge in traffic to some services, causing the service to be temporarily unavailable,”

The Cyberattack

The cyberattack on Microsoft 365 is a DoS attack and the target is its cloud platform and Outlook email apps. Also, the attack had serious impacts, with over 15,000 outages. Microsoft confirmed that the disruptions were caused by cyberattacks. The company also claims that it is investigating the issue. According to Quartz, a group with links to Russia, Anonymous Sudan claims responsibility for the attack. 

Final Words

Microsoft 365 faced a cyberattack on June 5th, 2023, that altered its services, including Outlook and its cloud platform. The attack was a DoS attack that flooded the network with traffic to make it down to users. A group that has links with Russia called Anonymous Sudan claims it played a role in the attack. Microsoft confirmed that the disruptions were caused by cyberattacks and that it is looking into the issue. However, it is no surprise that the Microsoft 365 was the target. It has hundreds of millions of users and this makes it a target for attackers. 

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