Category Archives: cyber

Amatera: How the prolific infostealer works and spreads

The malware that topped ESET’s infostealer detections in Latin America in the first half of 2026 is an example of how cybercrime has professionalized

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

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?

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

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

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

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

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

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.

MATCHBOIL: New tricks, same old evil intentions

ESET Research catalogs the changes of UAC-0099’s MATCHBOIL downloader from 2024 to 2026

Inside a brand deal scam targeting YouTube creators

A plausible-sounding sponsorship offer could mask an attempt to compromise your Google account

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

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

Timeshare exit scams: From fake buyers to recovery fraud

Con artists are targeting timeshare owners who want out – and some victims are hit twice

The devil is still in the email – but wearing a new mask

When phishing can increasingly pass familiar checks, avoiding or limiting the damage depends on how quickly your company can detect and contain the attack