Cybersecurity research and insight for the AI era · Moving soon to the ESET Blog
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>
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
Fernando Tavella • 08 Oct 2026 • 15 min. read
MATCHBOIL: New tricks, same old evil intentions
Alexandre Côté Cyr and Romain Dumont • 17 Sep 2026 • 17 min. read
Beware the SparroWock: The backdoor that bites, the commands that catch
Business Security
The SMB cybersecurity squeeze: AI agents at work, old attacks in overdrive
GuardBreaker: Derailing AI-assisted malware analysis with a code comment
Lessons from Cybersecurity Black Week
A critical PHP flaw, leaked Linux kernel reports, a poisoned LiteLLM release, and more, all in seven days. Which threats called for immediate action, and which generated more noise than real danger?
Roman Kováč • 28 Oct 2026
ESET APT Activity Report Q2 2026–Q3 2026
An overview of the activities of selected APT groups investigated and analyzed by ESET Research in Q2 2026 and Q3 2026
Jean-Ian Boutin • 28 Oct 2026
Video
PHP2Shell: What to know about two critical PHP flaws
Here's the lowdown on CVE-2026-109618 and CVE-2026-109619, as well as what website owners and IT teams should do to stay safe – all in a little more than two minutes
Editor • 26 Oct 2026
ESET researchers uncover MythicRatatoskr – a previously unknown Go-based backdoor hiding its C&C server inside the Yggdrasil mesh network – that paved the way for a destructive attack against a Ukrainian grain firm
Anton Cherepanov and Peter Strýček • 22 Oct 2026
Social Media
Is the ad a scam? How to tell before you click
You can trust a social media platform and still get scammed by an ad running on it
Phil Muncaster • 20 Oct 2026
Digital Security
Inbox flooded with sign-up messages? Email bombing explained
If you’re suddenly being overwhelmed with sign-up emails, it could very well be a sign of something more serious
Phil Muncaster • 16 Oct 2026
Scams
Medicare scam calls, texts and ads: What to watch for this Open Enrollment
Open Enrollment is peak season for Medicare fraud – here’s how to tell real outreach from fakes and keep your details safe
Phil Muncaster • 14 Oct 2026
How To
What to do when a data breach notice doesn't say much
Data breach notifications are telling victims less than ever. What the company leaves out can still shape what you do next.
Phil Muncaster • 12 Oct 2026
ESET Research catalogs the changes of UAC-0099’s MATCHBOIL downloader from 2024 to 2026
Fernando Tavella • 08 Oct 2026
Inside a brand deal scam targeting YouTube creators
A plausible-sounding sponsorship offer could mask an attempt to compromise your Google account
Christian Ali Bravo • 07 Oct 2026
The quest for simplicity: Why SMBs want advanced protection without the complexity
The cybersecurity market is often making it tougher for SMBs to keep threats at bay
Phil Muncaster • 06 Oct 2026
This month in security with Tony Anscombe – September 2026 edition
Autonomous AI agents go on a hacking spree, and Microsoft ships what used to be a year's worth of security patches in one go – here's how to keep pace
Editor • 30 Sep 2026
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