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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

Malware

Win32/Waledac for Valentine's Day

Win32/Waledac for Valentine's Day

Malware

Win32/Waledac for Valentine's Day

Pierre-Marc Bureau • 10 Feb 2009


Onward AMTSO

Onward AMTSO

Onward AMTSO

David Harley • 06 Feb 2009


Privacy

More on HIPAA is not privacy

More on HIPAA is not privacy

Privacy

More on HIPAA is not privacy

ESET Research • 06 Feb 2009


Threat Trends In January

Threat Trends In January

Threat Trends In January

ESET Research • 05 Feb 2009


Get Your Stimulus Check!

Get Your Stimulus Check!

Get Your Stimulus Check!

ESET Research • 04 Feb 2009


A Little Bit Different or "Google Got Bit"

A Little Bit Different or "Google Got Bit"

A Little Bit Different or "Google Got Bit"

ESET Research • 02 Feb 2009


Conficker Statistics

Conficker Statistics

Conficker Statistics

David Harley • 30 Jan 2009


Scams

This is a Lie

This is a Lie

Scams

This is a Lie

ESET Research • 30 Jan 2009


Conficker Clarified

Conficker Clarified

Conficker Clarified

David Harley • 30 Jan 2009


Trends in Security Software

Trends in Security Software

Trends in Security Software

David Harley • 28 Jan 2009


Grant Me Your Wallet

Grant Me Your Wallet

Grant Me Your Wallet

ESET Research • 27 Jan 2009


Enough to Break your Heartland: Fraud and Malware

Enough to Break your Heartland: Fraud and Malware

Enough to Break your Heartland: Fraud and Malware

David Harley • 26 Jan 2009

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