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Microsoft Criticised for Dodgy Midnight Blizzard Hack Notifications

Recipients warned to be vigilant of the APT29 warnings.

Microsoft has been criticised for sending spam and phishing-like notification emails regarding the compromise of its systems by Russian state-sponsored threat operation Midnight Blizzard, also known as APT29.

According to Techcrunch organisations affected by the breach have been urged to be vigilant of the emails, which were not sent in adherence to the Microsoft 365 breach process and have instead been delivered to tenant admins.

"The emails can go into spam — and tenant admin accounts are supposed to be secure breakglass accounts without email. They also haven't informed orgs via account managers. You want to check all emails going back to June. It is widespread," cybersecurity researcher Kevin Beaumont wrote in a LinkedIn post.

One such email was noted by a Microsoft customer to have "several red flags," including the presence of a Tenant ID request and an incomplete powerapps page, while a cybersecurity consultant said that all of his clients receiving the message expressed concerns about potential phishing.

Dan Raywood Senior Editor SC Media UK

Dan Raywood is a seasoned B2B journalist with over 20 years of experience, specializing in cybersecurity for the past 15 years. He has extensively covered topics from Advanced Persistent Threats and nation-state hackers to major data breaches and regulatory changes. Outside work, Dan enjoys supporting Tottenham Hotspur, managing mischievous cats, and sampling craft beers.

Dan Raywood Senior Editor SC Media UK

Dan Raywood is a seasoned B2B journalist with over 20 years of experience, specializing in cybersecurity for the past 15 years. He has extensively covered topics from Advanced Persistent Threats and nation-state hackers to major data breaches and regulatory changes. Outside work, Dan enjoys supporting Tottenham Hotspur, managing mischievous cats, and sampling craft beers.

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