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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

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ESET Research • 13 Jan 2009


Emotions are Poor Passwords

Emotions are Poor Passwords

Emotions are Poor Passwords

ESET Research • 12 Jan 2009


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ESET Research • 09 Jan 2009


Scams

Magic Lantern Show in the UK?

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Magic Lantern Show in the UK?

David Harley • 08 Jan 2009


Malware

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Self-Protection Part 10

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David Harley • 08 Jan 2009


Ahhh, Protection!!!

Ahhh, Protection!!!

Ahhh, Protection!!!

ESET Research • 07 Jan 2009


Malware

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Scams

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Self-Protection Part 8

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Self-Protection Part 8

David Harley • 06 Jan 2009

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