Webmail portals of NATO-aligned governments in Europe hacked by TA473 hackers using known Zimbra vulnerability
Proofpoint researchers disclosed that they have observed recent espionage-related activity by TA473 group, including yet-to-be-reported instances of TA473 targeting U.S. elected officials and staffers. TA473 is a newly minted Proofpoint threat actor that aligns with public reporting on Winter Vivern,…