Award-winning news, views, and insight from the ESET security community
Senior Malware Researcher
ESET research
FrostyNeighbor: Fresh mischief and digital shenanigans
Update WinRAR tools now: RomCom and others exploiting zero-day vulnerability
RomCom exploits Firefox and Windows zero days in the wild
ESET researchers uncovered new activities attributed to FrostyNeighbor, updating its compromise chain to support the group’s continual cyberespionage operations
Damien Schaeffer • 14 May 2026 • 8 min. read
ESET Research discovered a zero-day vulnerability in WinRAR being exploited in the wild in the guise of job application documents; the weaponized archives exploited a path traversal flaw to compromise their targets
Anton Cherepanov, Peter Strýček, Damien Schaeffer • 11 Aug 2025 • 8 min. read
ESET Research details the analysis of a previously unknown vulnerability in Mozilla products exploited in the wild and another previously unknown Microsoft Windows vulnerability, combined in a zero-click exploit
Damien Schaeffer and Romain Dumont • 26 Nov 2024 • 13 min. read