https://arstechnica.com/tech-policy/2019/10/microsoft-says-iranian-hackers-tried-to-hack-a-us-presidential-campaign/

Hackers backed by the Iranian government recently tried to hack email accounts used by the campaign of a US presidential candidate, a Microsoft official said on Friday.

The “Phosphorous” hackers, as Microsoft has named the group, targeted the unidentified campaign by attempting to access email accounts campaign staff received through Microsoft cloud services. Rather than relying on malware or exploiting software vulnerabilities, the attackers worked relentlessly to gather information that could be used to activate password resets and other account recovery services Microsoft provides.