I subscribe to HackNotice and got an alert about this hack. I’ve seen conflicting reports about the severity of the breach so keep your eyes peeled if you have a ‘public’ email service with MS i.e. hotmail, outlook.com…:
[…] Microsoft on Monday maintained that an incident reported over the weekend about an unknown attacker using a customer support agent’s credentials to access email content belonging to users of MSN, Outlook, and Hotmail accounts, affected only a limited number of users.
In initial comments on Saturday to TechCrunch—the first to report on the intrusion—Microsoft confirmed that email accounts belonging to just a few users had been compromised.
The company said the attackers had not accessed or viewed the actual content of the emails or any attachments. Instead, only certain other information related to a user’s account such as the email address, subject lines, email folders, and email addresses of people the user has communicated with, had been viewed or accessed.
An email from Microsoft to one of the victims that was later posted Saturday to Reddit, described the unauthorized access as lasting from Jan. 1, 2019 and March 28, 2019. The letter warned the user to be wary about phishing attempts while noting that Microsoft had no idea why the intruders might have viewed the email information or how it might have been used. Microsoft immediately disabled the stolen credentials preventing further misuse the company said.