Drowning in spam or scam emails? Here’s probably why

Has your inbox recently been deluged with unwanted and even outright malicious messages? Here are 10 possible reasons – and how to stem the tide.

ESET Research: Sandworm behind cyberattack on Poland’s power grid in late 2025

The attack involved data-wiping malware that ESET researchers have now analyzed and named DynoWiper

Common Apple Pay scams, and how to stay safe

Here’s how the most common scams targeting Apple Pay users work and what you can do to stay one step ahead

Old habits die hard: 2025’s most common passwords were as predictable as ever

Once again, data shows an uncomfortable truth: the habit of choosing eminently hackable passwords is alive and well

Why LinkedIn is a hunting ground for threat actors – and how to protect yourself

The business social networking site is a vast, publicly accessible database of corporate information. Don’t believe everyone on the site is who they say they are.

Is it time for internet services to adopt identity verification?

Should verified identities become the standard online? Australia’s social media ban for under-16s shows why the question matters.

Your personal information is on the dark web. What happens next?

If your data is on the dark web, it’s probably only a matter of time before it’s abused for fraud or account hijacking. Here’s what to do.

Credential stuffing: What it is and how to protect yourself

Reusing passwords may feel like a harmless shortcut – until a single breach opens the door to multiple accounts

A brush with online fraud: What are brushing scams and how do I stay safe?

Have you ever received a package you never ordered? It could be a warning sign that your data has been compromised, with more fraud to follow.

Revisiting CVE-2025-50165: A critical flaw in Windows Imaging Component

A comprehensive analysis and assessment of a critical severity vulnerability with low likelihood of mass exploitation

LongNosedGoblin tries to sniff out governmental affairs in Southeast Asia and Japan

ESET researchers discovered a China-aligned APT group, LongNosedGoblin, which uses Group Policy to deploy cyberespionage tools across networks of governmental institutions

ESET Threat Report H2 2025

A view of the H2 2025 threat landscape as seen by ESET telemetry and from the perspective of ESET threat detection and research experts

Black Hat Europe 2025: Was that device designed to be on the internet at all?

Behind the polished exterior of many modern buildings sit outdated systems with vulnerabilities waiting to be found

Black Hat Europe 2025: Reputation matters – even in the ransomware economy

Being seen as reliable is good for ‘business’ and ransomware groups care about 'brand reputation' just as much as their victims

Locks, SOCs and a cat in a box: What Schrödinger can teach us about cybersecurity

If you don’t look inside your environment, you can’t know its true state – and attackers count on that

Seeking symmetry during ATT&CK® season: How to harness today’s diverse analyst and tester landscape to paint a security masterpiece

Interpreting the vast cybersecurity vendor landscape through the lens of industry analysts and testing authorities can immensely enhance your cyber-resilience.

The big catch: How whaling attacks target top executives

Is your organization’s senior leadership vulnerable to a cyber-harpooning? Learn how to keep them safe.

Phishing, privileges and passwords: Why identity is critical to improving cybersecurity posture

Identity is effectively the new network boundary. It must be protected at all costs.

MuddyWater: Snakes by the riverbank

MuddyWater targets critical infrastructure in Israel and Egypt, relying on custom malware, improved tactics, and a predictable playbook

Oversharing is not caring: What’s at stake if your employees post too much online

From LinkedIn to X, GitHub to Instagram, there are plenty of opportunities to share work-related information. But posting could also get your company into trouble.

Influencers in the crosshairs: How cybercriminals are targeting content creators

Social media influencers can provide reach and trust for scams and malware distribution. Robust account protection is key to stopping the fraudsters.

MDR is the answer – now, what’s the question?

Why your business needs the best-of-breed combination of technology and human expertise

The OSINT advantage: Find your weak spots before attackers do

Here’s how open-source intelligence helps trace your digital footprint and uncover your weak points, plus a few essential tools to connect the dots

PlushDaemon compromises network devices for adversary-in-the-middle attacks

ESET researchers have discovered a network implant used by the China-aligned PlushDaemon APT group to perform adversary-in-the-middle attacks

What if your romantic AI chatbot can’t keep a secret?

Does your chatbot know too much? Here's why you should think twice before you tell your AI companion everything.

How password managers can be hacked – and how to stay safe

Look no further to learn how cybercriminals could try to crack your vault and how you can keep your logins safe

Why shadow AI could be your biggest security blind spot

From unintentional data leakage to buggy code, here’s why you should care about unsanctioned AI use in your company

In memoriam: David Harley

Former colleagues and friends remember the cybersecurity researcher, author, and mentor whose work bridged the human and technical sides of security

ESET APT Activity Report Q2 2025–Q3 2025

An overview of the activities of selected APT groups investigated and analyzed by ESET Research in Q2 2025 and Q3 2025

Sharing is scaring: The WhatsApp scam you didn’t see coming

How a fast-growing scam is tricking WhatsApp users into revealing their most sensitive financial and other data

Ground zero: 5 things to do after discovering a cyberattack

When every minute counts, preparation and precision can mean the difference between disruption and disaster

Fraud prevention: How to help older family members avoid scams

Families that combine open communication with effective behavioral and technical safeguards can cut the risk dramatically

Recruitment red flags: Can you spot a spy posing as a job seeker?

Here’s what to know about a recent spin on an insider threat – fake North Korean IT workers infiltrating western firms

How MDR can give MSPs the edge in a competitive market

With cybersecurity talent in short supply and threats evolving fast, managed detection and response is emerging as a strategic necessity for MSPs

Gotta fly: Lazarus targets the UAV sector

ESET research analyzes a recent instance of the Operation DreamJob cyberespionage campaign conducted by Lazarus, a North Korea-aligned APT group

IT service desks: The security blind spot that may put your business at risk

Could a simple call to the helpdesk enable threat actors to bypass your security controls? Here’s how your team can close a growing security gap.

AI-aided malvertising: Exploiting a chatbot to spread scams

Cybercriminals have tricked X’s AI chatbot into promoting phishing scams in a technique that has been nicknamed “Grokking”. Here’s what to know about it.

How Uber seems to know where you are – even with restricted location permissions

Is the ride-hailing app secretly tracking you? Not really, but this iOS feature may make it feel that way.

The case for cybersecurity: Why successful businesses are built on protection

Company leaders need to recognize the gravity of cyber risk, turn awareness into action, and put security front and center

Manufacturing under fire: Strengthening cyber-defenses amid surging threats

Manufacturers operate in one of the most unforgiving threat environments and face a unique set of pressures that make attacks particularly damaging

New spyware campaigns target privacy-conscious Android users in the UAE

ESET researchers have discovered campaigns distributing spyware disguised as Android Signal and ToTok apps, targeting users in the United Arab Emirates

DeceptiveDevelopment: From primitive crypto theft to sophisticated AI-based deception

Malware operators collaborate with covert North Korean IT workers, posing a threat to both headhunters and job seekers

Gamaredon X Turla collab

Notorious APT group Turla collaborates with Gamaredon, both FSB-associated groups, to compromise high‑profile targets in Ukraine

Small businesses, big targets: Protecting your business against ransomware

Long known to be a sweet spot for cybercriminals, small businesses are more likely to be victimized by ransomware than large enterprises

Introducing HybridPetya: Petya/NotPetya copycat with UEFI Secure Boot bypass

UEFI copycat of Petya/NotPetya exploiting CVE-2024-7344 discovered on VirusTotal

Are cybercriminals hacking your systems – or just logging in?

As bad actors often simply waltz through companies’ digital front doors with a key, here’s how to keep your own door locked tight

Preventing business disruption and building cyber-resilience with MDR

Given the serious financial and reputational risks of incidents that grind business to a halt, organizations need to prioritize a prevention-first cybersecurity strategy

Under lock and key: Safeguarding business data with encryption

As the attack surface expands and the threat landscape grows more complex, it’s time to consider whether your data protection strategy is fit for purpose

GhostRedirector poisons Windows servers: Backdoors with a side of Potatoes

ESET researchers have identified a new threat actor targeting Windows servers with a passive C++ backdoor and a malicious IIS module that manipulates Google search results

First known AI-powered ransomware uncovered by ESET Research

The discovery of PromptLock shows how malicious use of AI models could supercharge ransomware and other threats

The need for speed: Why organizations are turning to rapid, trustworthy MDR

How top-tier managed detection and response (MDR) can help organizations stay ahead of increasingly agile and determined adversaries

Investors beware: AI-powered financial scams swamp social media

Can you tell the difference between legitimate marketing and deepfake scam ads? It’s not always as easy as you may think.

Supply-chain dependencies: Check your resilience blind spot

Does your business truly understand its dependencies, and how to mitigate the risks posed by an attack on them?

Update WinRAR tools now: RomCom and others exploiting zero-day vulnerability

ESET Research discovered a zero-day vulnerability in WinRAR being exploited in the wild in the guise of job application documents; the weaponized archives exploited a path traversal flaw to compromise their targets

Black Hat USA 2025: Is a high cyber insurance premium about your risk, or your insurer’s?

A sky-high premium may not always reflect your company’s security posture

Android adware: What is it, and how do I get it off my device?

Is your phone suddenly flooded with aggressive ads, slowing down performance or leading to unusual app behavior? Here’s what to do.

Black Hat USA 2025: Policy compliance and the myth of the silver bullet

Who’s to blame when the AI tool managing a company’s compliance status gets it wrong?

Black Hat USA 2025: Does successful cybersecurity today increase cyber-risk tomorrow?

Success in cybersecurity is when nothing happens, plus other standout themes from two of the event’s keynotes

ESET Threat Report H1 2025: ClickFix, infostealer disruptions, and ransomware deathmatch

Threat actors are embracing ClickFix, ransomware gangs are turning on each other – toppling even the leaders – and law enforcement is disrupting one infostealer after another

Why the tech industry needs to stand firm on preserving end-to-end encryption

Restricting end-to-end encryption on a single-country basis would not only be absurdly difficult to enforce, but it would also fail to deter criminal activity