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2026-07-29 ⋅ Proofpoint ⋅ Greg Lesnewich, Konstantin Klinger, Mark Kelly, Nick Attfield, Saher Naumaan, Stuart Del Caliz
Cleaning Out Inboxes: TA488 Comes for Outlook with Another Half-Click Exploit
ZimReaper Void Blizzard
2026-07-23 ⋅ Proofpoint ⋅ Greg Lesnewich, Konstantin Klinger, Mark Kelly, Nick Attfield, Saher Naumaan
Operation RoundPress Rolls on with More Half-Click Webmail Zero-Days from TA458
SpyPress
2026-07-23 ⋅ Proofpoint ⋅ Greg Lesnewich, Konstantin Klinger, Mark Kelly, Nick Attfield, Saher Naumaan
TA488 Targets Zimbra Mailservers with Half-Click Exploits
ZimReaper
2026-07-07 ⋅ Proofpoint ⋅ Greg Lesnewich, Mark Kelly, Proofpoint Threat Research Team
One Email Closer to the Edge: UNK_MassTraction & the Physics of Exploitation
IceCube
2025-09-16 ⋅ Proofpoint ⋅ Greg Lesnewich, Mark Kelly, Nick Attfield, Proofpoint Threat Research Team
Going Underground: China-aligned TA415 Conducts U.S.-China Economic Relations Targeting Using VS Code Remote Tunnels
2025-06-30 ⋅ Proofpoint ⋅ David Galazin, Greg Lesnewich, Kelsey Merriman, Proofpoint Threat Research Team, Selena Larson
10 Things I Hate About Attribution: RomCom vs. TransferLoader
DustyHammock MeltingClaw RustyClaw ShadyHammock SlipScreen TransferLoader TA829
2025-05-13 ⋅ Proofpoint ⋅ Greg Lesnewich, Mark Kelly, Saher Naumaan
TA406 Pivots to the Front
TA406
2025-04-17 ⋅ Proofpoint ⋅ Greg Lesnewich, Josh Miller, Mark Kelly, Saher Naumaan
Around the World in 90 Days: State-Sponsored Actors Try ClickFix
Quasar RAT UNK_RemoteRogue
2024-02-27 ⋅ Twitter (@greglesnewich) ⋅ Greg Lesnewich
Tweet with context on TA421 / APT29 / Midnight Blizzard / BlueBravo / Cozy Bear
WINELOADER
2024-01-05 ⋅ Twitter (@greglesnewich) ⋅ Greg Lesnewich
Tweets about a SpectralBlur a macOS sample
SpectralBlur
2023-12-05 ⋅ Proofpoint ⋅ Crista Giering, Greg Lesnewich, Proofpoint Threat Research Team
TA422’s Dedicated Exploitation Loop—the Same Week After Week
2023-01-25 ⋅ Proofpoint ⋅ Greg Lesnewich, Proofpoint Threat Research Team
TA444: The APT Startup Aimed at Acquisition (of Your Funds)
CageyChameleon Lazarus Group TA444