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Category Archives: Security Advisory

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How social engineering works | Unlocked 403 cybersecurity podcast (S2E6)

Think you could never fall for an online scam? Think again. Here’s how scammers could exploit psychology to deceive you – and what you can do to stay one step ahead

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

This month in security with Tony Anscombe – October 2025 edition

From the end of Windows 10 support to scams on TikTok and state-aligned hackers wielding AI, October’s headlines offer a glimpse of what’s shaping cybersecurity right now

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

Cybersecurity Awareness Month 2025: When seeing isn’t believing

Deepfakes are blurring the line between real and fake and fraudsters are cashing in, using synthetic media for all manner of scams

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

Cybersecurity Awareness Month 2025: Cyber-risk thrives in the shadows

Shadow IT leaves organizations exposed to cyberattacks and raises the risk of data loss and compliance failures

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

SnakeStealer: How it preys on personal data – and how you can protect yourself

Here’s what to know about the malware with an insatiable appetite for valuable data, so much so that it tops this year’s infostealer detection charts

Cybersecurity Awareness Month 2025: Building resilience against ransomware

Ransomware rages on and no organization is too small to be targeted by cyber-extortionists. How can your business protect itself against the threat?

Minecraft mods: Should you ‘hack’ your game?

Some Minecraft mods don’t help build worlds – they break them. Here’s how malware can masquerade as a Minecraft mod.

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.

Cybersecurity Awareness Month 2025: Why software patching matters more than ever

As the number of software vulnerabilities continues to increase, delaying or skipping security updates could cost your business dearly.

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.

Cybersecurity Awareness Month 2025: Passwords alone are not enough

Never rely on just a password, however strong it may be. Multi-factor authentication is essential for anyone who wants to protect their online accounts from intruders.

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

Beware of threats lurking in booby-trapped PDF files

Looks can be deceiving, so much so that the familiar icon could mask malware designed to steal your data and money.

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

Cybersecurity Awareness Month 2025: Knowledge is power

We’re kicking off the month with a focus on the human element: the first line of defense, but also the path of least resistance for many cybercriminals

This month in security with Tony Anscombe – September 2025 edition

The past 30 days have seen no shortage of new threats and incidents that brought into sharp relief the need for well-thought-out cyber-resilience plans

Roblox executors: It’s all fun and games until someone gets hacked

You could be getting more than you bargained for when you download that cheat tool promising quick wins

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

Watch out for SVG files booby-trapped with malware

What you see is not always what you get as cybercriminals increasingly weaponize SVG files as delivery vectors for stealthy malware

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

HybridPetya: The Petya/NotPetya copycat comes with a twist

HybridPetya is the fourth publicly known real or proof-of-concept bootkit with UEFI Secure Boot bypass functionality

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 firmly 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

This month in security with Tony Anscombe – August 2025 edition

From Meta shutting down millions of WhatsApp accounts linked to scam centers all the way to attacks at water facilities in Europe, August 2025 saw no shortage of impactful cybersecurity news

Don’t let “back to school” become “back to (cyber)bullying”

Cyberbullying is a fact of life in our digital-centric society, but there are ways to push back

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

“What happens online stays online” and other cyberbullying myths, debunked

Separating truth from fiction is the first step towards making better parenting decisions. Let’s puncture some of the most common misconceptions about online harassment.

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?

How the always-on generation can level up its cybersecurity game

Digital natives are comfortable with technology, but may be more exposed to online scams and other threats than they think

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

WinRAR zero-day exploited in espionage attacks against high-value targets

The attacks used spearphishing campaigns to target financial, manufacturing, defense, and logistics companies in Europe and Canada, ESET research finds

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

Is your phone spying on you? | Unlocked 403 cybersecurity podcast (S2E5)

Here’s what you need to know about the inner workings of modern spyware and how to stay away from apps that know too much

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

This month in security with Tony Anscombe – July 2025 edition

Here’s a look at cybersecurity stories that moved the needle, raised the alarm, or offered vital lessons in July 2025

The hidden risks of browser extensions – and how to stay safe

Not all browser add-ons are handy helpers – some may contain far more than you have bargained for

SharePoint under fire: ToolShell attacks hit organizations worldwide

The ToolShell bugs are being exploited by cybercriminals and APT groups alike, with the US on the receiving end of 13 percent of all attacks

ToolShell: An all-you-can-eat buffet for threat actors

ESET Research has been monitoring attacks involving the recently discovered ToolShell zero-day vulnerabilities

Rogue CAPTCHAs: Look out for phony verification pages spreading malware

Before rushing to prove that you’re not a robot, be wary of deceptive human verification pages as an increasingly popular vector for delivering malware

Why is your data worth so much? | Unlocked 403 cybersecurity podcast (S2E4)

Behind every free online service, there’s a price being paid. Learn why your digital footprint is so valuable, and why you might be the product.

Unmasking AsyncRAT: Navigating the labyrinth of forks

ESET researchers map out the labyrinthine relationships among the vast hierarchy of AsyncRAT variants

How to get into cybersecurity | Unlocked 403 cybersecurity podcast (S2E3)

Cracking the code of a successful cybersecurity career starts here. Hear from ESET’s Robert Lipovsky as he reveals how to break into and thrive in this fast-paced field.

Task scams: Why you should never pay to get paid

Some schemes might sound unbelievable, but they’re easier to fall for than you think. Here’s how to avoid getting played by gamified job scams.

How government cyber cuts will affect you and your business

Deep cuts in cybersecurity spending risk creating ripple effects that will put many organizations at a higher risk of falling victim to cyberattacks

Gamaredon in 2024: Cranking out spearphishing campaigns against Ukraine with an evolved toolset

ESET Research analyzes Gamaredon’s updated cyberespionage toolset, new stealth-focused techniques, and aggressive spearphishing operations observed throughout 2024

ESET Threat Report H1 2025: Key findings

ESET Chief Security Evangelist Tony Anscombe reviews some of the report’s standout findings and their implications for organizations in 2025 and beyond

ESET APT Activity Report Q4 2024–Q1 2025: Malware sharing, wipers and exploits

ESET experts discuss Sandworm’s new data wiper, UnsolicitedBooker’s relentless campaigns, attribution challenges amid tool-sharing, and other key findings from the latest APT Activity Report

This month in security with Tony Anscombe – June 2025 edition

From Australia’s new ransomware payment disclosure rules to another record-breaking DDoS attack, June 2025 saw no shortage of interesting cybersecurity news

ESET Threat Report H1 2025

A view of the H1 2025 threat landscape as seen by ESET telemetry and from the perspective of ESET threat detection and research experts

BladedFeline: Whispering in the dark

ESET researchers analyzed a cyberespionage campaign conducted by BladedFeline, an Iran-aligned APT group with likely ties to OilRig

Don’t let dormant accounts become a doorway for cybercriminals

Do you have online accounts you haven’t used in years? If so, a bit of digital spring cleaning might be in order.

This month in security with Tony Anscombe – May 2025 edition

From a flurry of attacks targeting UK retailers to campaigns corralling end-of-life routers into botnets, it’s a wrap on another month filled with impactful cybersecurity news

Word to the wise: Beware of fake Docusign emails

Cybercriminals impersonate the trusted e-signature brand and send fake Docusign notifications to trick people into giving away their personal or corporate data

Danabot under the microscope

ESET Research has been tracking Danabot’s activity since 2018 as part of a global effort that resulted in a major disruption of the malware’s infrastructure

Danabot: Analyzing a fallen empire

ESET Research shares its findings on the workings of Danabot, an infostealer recently disrupted in a multinational law enforcement operation

Lumma Stealer: Down for the count

The bustling cybercrime enterprise has been dealt a significant blow in a global operation that relied on the expertise of ESET and other technology companies

ESET takes part in global operation to disrupt Lumma Stealer

Our intense monitoring of tens of thousands of malicious samples helped this global disruption operation

The who, where, and how of APT attacks in Q4 2024–Q1 2025

ESET Chief Security Evangelist Tony Anscombe highlights key findings from the latest issue of the ESET APT Activity Report

ESET APT Activity Report Q4 2024–Q1 2025

An overview of the activities of selected APT groups investigated and analyzed by ESET Research in Q4 2024 and Q1 2025

Sednit abuses XSS flaws to hit gov’t entities, defense companies

Operation RoundPress targets webmail software to steal secrets from email accounts belonging mainly to governmental organizations in Ukraine and defense contractors in the EU

Operation RoundPress

ESET researchers uncover a Russia-aligned espionage operation targeting webmail servers via XSS vulnerabilities

How can we counter online disinformation? | Unlocked 403 cybersecurity podcast (S2E2)

Ever wondered why a lie can spread faster than the truth? Tune in for an insightful look at disinformation and how we can fight one of the most pressing challenges facing our digital world.

Catching a phish with many faces

Here’s a brief dive into the murky waters of shape-shifting attacks that leverage dedicated phishing kits to auto-generate customized login pages on the fly

Beware of phone scams demanding money for ‘missed jury duty’

When we get the call, it’s our legal responsibility to attend jury service. But sometimes that call won’t come from the courts – it will be a scammer.

Toll road scams are in overdrive: Here’s how to protect yourself

Have you received a text message about an unpaid road toll? Make sure you’re not the next victim of a smishing scam.

RSAC 2025 wrap-up – Week in security with Tony Anscombe

From the power of collaborative defense to identity security and AI, catch up on the event’s key themes and discussions

TheWizards APT group uses SLAAC spoofing to perform adversary-in-the-middle attacks

ESET researchers analyzed Spellbinder, a lateral movement tool used to perform adversary-in-the-middle attacks

This month in security with Tony Anscombe – April 2025 edition

From the near-demise of MITRE’s CVE program to a report showing that AI outperforms elite red teamers in spearphishing, April 2025 was another whirlwind month in cybersecurity

How safe and secure is your iPhone really?

Your iPhone isn’t necessarily as invulnerable to security threats as you may think. Here are the key dangers to watch out for and how to harden your device against bad actors.

Deepfake ‘doctors’ take to TikTok to peddle bogus cures

Look out for AI-generated ‘TikDocs’ who exploit the public’s trust in the medical profession to drive sales of sketchy supplements

How fraudsters abuse Google Forms to spread scams

The form and quiz-building tool is a popular vector for social engineering and malware. Here’s how to stay safe.

Will super-smart AI be attacking us anytime soon?

What practical AI attacks exist today? “More than zero” is the answer – and they’re getting better.

CapCut copycats are on the prowl

Cybercriminals lure content creators with promises of cutting-edge AI wizardry, only to attempt to steal their data or hijack their devices instead

They’re coming for your data: What are infostealers and how do I stay safe?

Here’s what to know about malware that raids email accounts, web browsers, crypto wallets, and more – all in a quest for your sensitive data

Attacks on the education sector are surging: How can cyber-defenders respond?

Academic institutions have a unique set of characteristics that makes them attractive to bad actors. What’s the right antidote to cyber-risk?

1 billion reasons to protect your identity online

Corporate data breaches are a gateway to identity fraud, but they’re not the only one. Here’s a lowdown on how your personal data could be stolen – and how to make sure it isn’t.

So your friend has been hacked: Could you be next?

When a ruse puts on a familiar face, your guard might drop, making you an easy mark. Learn how to tell a friend apart from a foe.

The good, the bad and the unknown of AI: A Q&A with Mária Bieliková

The computer scientist and AI researcher shares her thoughts on the technology’s potential and pitfalls – and what may lie ahead for us

This month in security with Tony Anscombe – March 2025 edition

From an exploited vulnerability in a third-party ChatGPT tool to a bizarre twist on ransomware demands, it’s a wrap on another month filled with impactful cybersecurity news

RansomHub affiliates linked to rival RaaS gangs

ESET researchers also examine the growing threat posed by tools that ransomware affiliates deploy in an attempt to disrupt EDR security solutions

FamousSparrow resurfaces to spy on targets in the US, Latin America

Once thought to be dormant, the China-aligned group has also been observed using the privately-sold ShadowPad backdoor for the first time

Resilience in the face of ransomware: A key to business survival

Your company’s ability to tackle the ransomware threat head-on can ultimately be a competitive advantage

Making it stick: How to get the most out of cybersecurity training

Security awareness training doesn’t have to be a snoozefest – games and stories can help instill ‘sticky’ habits that will kick in when a danger is near