Mass spamming starts with no MFA and credential stuffing

Microsoft has been monitoring and seeing an increase in attacks using malicious OAuth applications, installed on compromise cloud servers that then facilitate mass spamming from Exchange Online servers. Malicious OAuth applications abuse cloud email services to spread spam – Microsoft Security Blog The attack started with the threat actor launching …

Microsoft Teams is keeping security tokens in plain text… and more UPDATED 23 September 2022

The original post was published on 16 September 2022 This is a real problem, no software or system should keep any security token in plain text, any time during operation. The user base for Microsoft Teams is in excess of 270 million users – we are part of that number …