August 29, 2026
- ESET documented GuardBreaker, an anti-EDR technique used by Russia-aligned UAC-0099 against a Ukrainian victim (@thegrugq), continuing a busy week for the group (earlier coverage). Separate analysis traces a UAC-0099 WSF lure through a LUNCHPOKE → BURNYBEAR → MATCHBOIL.V2 chain with claimed overlap into Sandworm activity (chain analysis). · Threat Activity
in PaperCut Ships a Second Emergency Patch After Researchers Bypass the First