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Cybersecurity research and insight for the AI era · <a href='https://www.eset.com/blog/en/' target='_blank'>Moving soon to the ESET Blog</a>

MythicRatatoskr: An Yggdrasil-enabled backdoor deployed in a UAC-0099-Sandworm collaboration
Anton Cherepanov

Anton Cherepanov and Peter Strýček • 22 Oct 2026 • 16 min. read

ESET Research

MythicRatatoskr: An Yggdrasil-enabled backdoor deployed in a UAC-0099-Sandworm collaboration

Anton Cherepanov and Peter Strýček • 22 Oct 2026 • 16 min. read

MATCHBOIL: New tricks, same old evil intentions
Fernando Tavella

Fernando Tavella • 08 Oct 2026 • 15 min. read

ESET Research

MATCHBOIL: New tricks, same old evil intentions

Fernando Tavella • 08 Oct 2026 • 15 min. read

Beware the SparroWock: The backdoor that bites, the commands that catch
Alexandre Côté Cyr

Alexandre Côté Cyr and Romain Dumont • 17 Sep 2026 • 17 min. read

ESET Research

Beware the SparroWock: The backdoor that bites, the commands that catch

Alexandre Côté Cyr and Romain Dumont • 17 Sep 2026 • 17 min. read

The SMB cybersecurity squeeze: AI agents at work, old attacks in overdrive

Business Security

The SMB cybersecurity squeeze: AI agents at work, old attacks in overdrive

GuardBreaker: Derailing AI-assisted malware analysis with a code comment

Business Security

GuardBreaker: Derailing AI-assisted malware analysis with a code comment

Latest Articles

Arggghhh Google

Arggghhh Google

Arggghhh Google

ESET Research • 17 Mar 2009


About The Domain Scam, etc.

About The Domain Scam, etc.

About The Domain Scam, etc.

ESET Research • 17 Mar 2009


Excel Exploit

Excel Exploit

Excel Exploit

David Harley • 17 Mar 2009


Support Requests

Support Requests

Support Requests

David Harley • 17 Mar 2009


BBC Botnet: Another View or Two

BBC Botnet: Another View or Two

BBC Botnet: Another View or Two

David Harley • 16 Mar 2009


Urban Legends

Urban Legends

Urban Legends

David Harley • 16 Mar 2009


The Strange World of Twitter

The Strange World of Twitter

The Strange World of Twitter

David Harley • 16 Mar 2009


Is it Safe? - Book Review

Is it Safe? - Book Review

Is it Safe? - Book Review

David Harley • 16 Mar 2009


When is a Hoax not a Hoax?

When is a Hoax not a Hoax?

When is a Hoax not a Hoax?

David Harley • 14 Mar 2009


BBC Botnet Revisited

BBC Botnet Revisited

BBC Botnet Revisited

David Harley • 14 Mar 2009


Google - The Pirate's First Mate

Google - The Pirate's First Mate

Google - The Pirate's First Mate

ESET Research • 13 Mar 2009


More on the BBC's Botnet

More on the BBC's Botnet

More on the BBC's Botnet

David Harley • 13 Mar 2009

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