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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

Social Media

Facing Down Facebook

Facing Down Facebook

Social Media

Facing Down Facebook

David Harley • 21 Feb 2009


Cybercrime

Securing the Perimeter

Securing the Perimeter

Cybercrime

Securing the Perimeter

ESET Research • 20 Feb 2009


The Least Agile Acrobat

The Least Agile Acrobat

The Least Agile Acrobat

ESET Research • 20 Feb 2009


Anti-Antimalware: Faking It, Not Really Making It

Anti-Antimalware: Faking It, Not Really Making It

Anti-Antimalware: Faking It, Not Really Making It

David Harley • 20 Feb 2009


The Perils of PDF

The Perils of PDF

The Perils of PDF

David Harley • 20 Feb 2009


A Little Extra Information

A Little Extra Information

A Little Extra Information

ESET Research • 19 Feb 2009


Fast Flux Report: Situation Normal, All Fluxed Up

Fast Flux Report: Situation Normal, All Fluxed Up

Fast Flux Report: Situation Normal, All Fluxed Up

David Harley • 19 Feb 2009


MS09-002 Exploits: Old Dogs, New Tricks?

MS09-002 Exploits: Old Dogs,  New Tricks?

MS09-002 Exploits: Old Dogs, New Tricks?

David Harley • 18 Feb 2009


All's Fair in Love and Marketing?

All's Fair in Love and Marketing?

All's Fair in Love and Marketing?

David Harley • 12 Feb 2009


The Oldest Un-Patched Microsoft Vulnerability

The Oldest Un-Patched Microsoft Vulnerability

The Oldest Un-Patched Microsoft Vulnerability

ESET Research • 11 Feb 2009


Bill Gates shares his fortune - not

Bill Gates shares his fortune - not

Bill Gates shares his fortune - not

David Harley • 10 Feb 2009


That Wasn't Your Sweetheart

That Wasn't Your Sweetheart

That Wasn't Your Sweetheart

ESET Research • 10 Feb 2009

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