https://www.proofpoint.com/us/blog/threat-insight/ta458-roundpress-exploits
Operation RoundPress Rolls on with More Half-Click Webmail Zero-Days from TA458 | Proofpoint US
Jul 23, 2026 - This is part 2 of a 2-part blog series Proofpoint is publishing about Russian espionage actors using half-click exploits to target government webmail servers....