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Lessons from Cybersecurity Black Week

Lessons from Cybersecurity Black Week

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

ESET APT Activity Report Q2 2026–Q3 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


PHP2Shell: What to know about two critical PHP flaws

PHP2Shell: What to know about two critical PHP flaws

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


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

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

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

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


Is the ad a scam? How to tell before you click

Is the ad a scam? How to tell before you click

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


Inbox flooded with sign-up messages? Email bombing explained

Inbox flooded with sign-up messages? Email bombing explained

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


Medicare scam calls, texts and ads: What to watch for this Open Enrollment

Medicare scam calls, texts and ads: What to watch for this Open Enrollment

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


What to do when a data breach notice doesn't say much

What to do when a data breach notice doesn't say much

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


MATCHBOIL: New tricks, same old evil intentions

MATCHBOIL: New tricks, same old evil intentions

MATCHBOIL: New tricks, same old evil intentions

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

Inside a brand deal scam targeting YouTube creators

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 quest for simplicity: Why SMBs want advanced protection without the complexity

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

This month in security with Tony Anscombe – September 2026 edition

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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