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Fake error popups are spreading malware fast

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Fake error popups are spreading malware fast

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A dangerous cybercrime tool has surfaced in underground forums, making it far easier for attackers to spread malware. 

Instead of relying on hidden downloads, this tool pushes fake error messages that pressure you into fixing problems that never existed. Security researchers say this method is spreading quickly because it feels legitimate. The page looks broken. The warning feels urgent. The fix sounds simple. 

That combination is proving alarmingly effective for cybercriminals.

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How fake error malware attacks actually work

These attacks begin with a compromised website. When a visitor lands on the page, something looks wrong right away. Text appears broken. Fonts look scrambled. Visual elements seem corrupted. A pop-up then appears claiming the issue can be fixed with a browser update or a missing system font. A button offers to repair the problem instantly. 

Clicking that button copies a command to the clipboard and displays instructions to paste it into PowerShell or a system terminal. That single step launches the infection.

MALICIOUS CHROME EXTENSIONS CAUGHT STEALING SENSITIVE DATA

Fake error popups make a website look broken by scrambling text or fonts to create urgency and panic. (Jens Büttner/picture alliance via Getty Images)

Why this new tool changes the threat landscape

The tool behind these attacks is called ErrTraffic. It automates the entire process and removes the technical barriers that once limited cybercrime operations. For about $800, attackers get a full package with a control panel and scripted payload delivery. Analysts at the Hudson Rock Threat Intelligence Team identified the tool after tracking its promotion on Russian-language forums in early December 2025. 

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ErrTraffic works through a simple JavaScript injection. A single line of code connects a hacked site to the attacker’s dashboard. From there, everything adapts automatically. The script detects the operating system and browser. It then displays a customized fake error message in the correct language. The attack works across Windows, Android, macOS and Linux.

MOST PARKED DOMAINS NOW PUSH SCAMS AND MALWARE

The popups often claim a browser update or missing system font is needed to fix the problem. (Daniel Acker/Bloomberg via Getty Images)

Why security software struggles to stop it

Traditional malware defenses look for suspicious downloads or unauthorized installations. ErrTraffic avoids both. Browsers see normal text copying. Security tools see a legitimate system utility being opened manually. Nothing appears out of place. That design allows the attack to slip through protections that would normally stop malware in its tracks.

The success rate is deeply concerning

Data pulled from active ErrTraffic campaigns shows conversion rates approaching 60%. That means more than half of the visitors who see the fake error message follow the instructions and install malware. Once active, the tool can deliver infostealers like Lumma or Vidar on Windows devices. Android targets often receive banking trojans instead. The control panel even includes geographic filtering, with built-in blocks for Russia and neighboring regions to avoid drawing attention from local authorities.

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What happens after infection?

Once malware is installed, credentials and session data are stolen. Those compromised logins are then used to breach additional websites. Each newly hacked site becomes another delivery vehicle for the same attack. That cycle allows the campaign to grow without direct involvement from the original operator.

FAKE WINDOWS UPDATE PUSHES MALWARE IN NEW CLICKFIX ATTACK

Following the on-screen instructions can quietly trigger malware that steals passwords and personal data. (Kurt Knutsson)

Ways to stay safe from fake error malware

A few smart habits can significantly reduce risk when facing fake error pop-ups and browser-based traps.

1) Never run commands suggested by a website

Legitimate websites never ask you to copy and paste commands into PowerShell or a system terminal. Fake error malware relies on convincing messages that pressure you into doing exactly that. If a page instructs you to run code to fix a problem, close it immediately.

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2) Close pages that claim your system is corrupted

Fake error campaigns often use broken text, scrambled fonts or warnings about missing files to grab attention. As a result, these visuals create urgency and trigger fear. In reality, a real system problem never announces itself through a random website, so close the page right away.

3) Install updates only through official system settings

Real browser and operating system updates come from built-in update tools, not pop-ups on websites. If an update is needed, your device will notify you directly through system settings or trusted app stores.

4) Install strong antivirus software on every device

Strong antivirus software can help block malicious scripts, detect infostealers and stop suspicious behavior before damage spreads. This is especially important since fake error malware targets Windows, Android, macOS and Linux systems.

The best way to safeguard yourself from malicious links that install malware, potentially accessing your private information, is to have strong antivirus software installed on all your devices. This protection can also alert you to phishing emails and ransomware scams, keeping your personal information and digital assets safe.

Get my picks for the best 2025 antivirus protection winners for your Windows, Mac, Android and iOS devices at Cyberguy.com.

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5) Use a data removal service to reduce exposure

Stolen credentials fuel the spread of fake error malware. Removing personal information from data broker sites can reduce the impact if login details are compromised and limit how far an attack can spread.

While no service can guarantee the complete removal of your data from the internet, a data removal service is really a smart choice. They aren’t cheap, and neither is your privacy. These services do all the work for you by actively monitoring and systematically erasing your personal information from hundreds of websites. It’s what gives me peace of mind and has proven to be the most effective way to erase your personal data from the internet. By limiting the information available, you reduce the risk of scammers cross-referencing data from breaches with information they might find on the dark web, making it harder for them to target you.

Check out my top picks for data removal services and get a free scan to find out if your personal information is already out on the web by visiting Cyberguy.com.

Get a free scan to find out if your personal information is already out on the web: Cyberguy.com.

6) Treat font and browser update pop-ups with suspicion

Claims about missing fonts or outdated browsers are a hallmark of these attacks. Modern systems manage fonts automatically, and browsers update themselves. A webpage has no reason to request manual fixes.

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If a real update is needed, the operating system will request it directly. A random webpage never should.

Kurt’s key takeaways 

Fake error malware works because it plays on a very human reaction. When something on a screen suddenly looks broken, most people want to fix it fast and move on. That split-second decision is exactly what attackers are counting on. Tools like ErrTraffic show how polished these scams have become. The messages look professional. The instructions feel routine. Nothing about the moment screams danger. But behind the scenes, one click can quietly hand over passwords, banking access and personal data. The good news is that slowing down makes a real difference. Closing a suspicious page and trusting built-in system updates can stop these attacks cold. When it comes to pop-ups claiming your device is broken, walking away is often the smartest fix.

Have you ever seen a pop-up or error message that made you stop and wonder if it was real? Tell us what it looked like and how you handled it by writing to us at Cyberguy.com.

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Copyright 2025 CyberGuy.com. All rights reserved.

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YouTube Music starts putting lyrics behind a paywall

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YouTube Music starts putting lyrics behind a paywall

Free YouTube Music accounts are now seeing their access to lyrics limited, according to multiple reports. Google started testing lyrics as an exclusive feature for Premium users in September, but it appears that it’s now receiving a wider rollout. It seems that free users will be limited to viewing lyrics for five songs per month, though we’ve reached out to Google for confirmation.

Once that limit is reached, users will only be able to see the first couple of lines. Everything beyond that will be blurred out, and they’ll be prompted to “Unlock lyrics with Premium.” The banner warning users about their limited lyric views remaining appears prominently when you open the tab, complete with a countdown.

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SoundCloud data breach exposes 29.8 million user accounts

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SoundCloud data breach exposes 29.8 million user accounts

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Hackers have exposed personal and contact information tied to SoundCloud accounts, with data breach notification service Have I Been Pwned reporting impacts to approximately 29.8 million users. The breach hit one of the world’s largest audio platforms and left many users locked out with error messages before the company confirmed the incident.

Founded in 2007, SoundCloud grew into an artist-first service hosting more than 400 million tracks from over 40 million creators. That scale made this incident especially concerning. SoundCloud said it detected unauthorized activity tied to an internal service dashboard and launched its incident response process. At the time, users reported 403 Forbidden errors, especially when connecting through VPNs.

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149 MILLION PASSWORDS EXPOSED IN MASSIVE CREDENTIAL LEAK

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SoundCloud confirmed unauthorized activity after users reported access errors, triggering an internal incident response. (iStock)

What data was exposed in the SoundCloud breach

SoundCloud initially said attackers accessed limited data and did not touch passwords or financial information. The company said the exposed information matched what users already show publicly on profiles.

Later disclosures painted a much bigger picture.

According to Have I Been Pwned, attackers harvested data from approximately 29.8 million accounts. That data included:

  • Email addresses
  • Usernames and display names
  • Profile photos and avatars
  • Follower and following counts
  • Geographic locations, in some cases

While no passwords were taken, linking emails to public profiles creates real risk. That combination fuels phishing, impersonation and targeted scams.

Who is behind the attack

Security researchers tied the breach to ShinyHunters, a well-known extortion gang. Sources told BleepingComputer that the group attempted to extort SoundCloud following the data breach. SoundCloud later confirmed those claims. In a January update, the company said attackers made demands and launched email-flooding campaigns to harass users, employees and partners. ShinyHunters has also claimed responsibility for recent voice phishing attacks targeting single sign-on systems at Okta, Microsoft and Google. Those attacks targeted corporate SaaS accounts to steal data and extort.

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Why this breach matters even without passwords

At first glance, this may sound less serious than breaches involving passwords or credit cards. That assumption can be dangerous. Email addresses tied to real profiles allow scammers to craft convincing messages. They can pose as SoundCloud, brands or even other creators. With follower counts and usernames, messages feel personal and believable. Once attackers gain trust, they push links, malware or fake login pages. That is often how larger account takeovers begin.

What SoundCloud users should expect next

SoundCloud has not said whether more details will be released. The company did confirm the attack and the extortion attempt, but it has not answered follow-up questions about the scope or internal controls. For users, the long-term risk comes from how widely this dataset spreads. Once published, exposed data rarely disappears. It circulates across forums, marketplaces and scam networks for years.

We reached out to SoundCloud for comment, and a representative told us, “We are aware that a threat actor group has published data online allegedly taken from our organization. Please know that our security team—supported by leading third-party cybersecurity experts—is actively reviewing the claim and published data.”

SoundCloud has said it has found no evidence that sensitive data, such as passwords or financial information, was accessed.

Ways to stay safe after the SoundCloud breach

If you have or had a SoundCloud account, now is the time to act. Even limited data exposure can lead to targeted scams if you ignore it.

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1) Watch for phishing and impersonation emails

Scammers often move fast after a breach. Watch your inbox for messages that mention SoundCloud, music uploads, copyright issues or account warnings. Do not click links or open attachments from unexpected emails. When in doubt, go directly to the official website instead of using email links. Strong antivirus software adds another layer of protection here.

Nearly 29.8 million accounts had emails and public profile data harvested, raising concerns about phishing and impersonation. (Cyberguy.com)

The best way to safeguard yourself from malicious links that install malware, potentially accessing your private information, is to have strong antivirus software installed on all your devices. This protection can also alert you to phishing emails and ransomware scams, keeping your personal information and digital assets safe.

Get my picks for the best 2026 antivirus protection winners for your Windows, Mac, Android & iOS devices at Cyberguy.com

2) Change your SoundCloud password anyway

Passwords were not exposed, but changing them is still smart. Create a new password that you do not use anywhere else. If remembering passwords feels impossible, consider using a password manager to generate and securely store strong passwords. This reduces the risk of reuse across platforms.

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Next, see if your email has been exposed in past breaches. Our #1 password manager (see Cyberguy.com) pick includes a built-in breach scanner that checks whether your email address or passwords have appeared in known leaks. If you discover a match, immediately change any reused passwords and secure those accounts with new, unique credentials.

Check out the best expert-reviewed password managers of 2026 at Cyberguy.com

3) Turn on two-factor authentication

Two-factor authentication (2FA) adds a critical barrier if someone tries to access your account. Even if attackers guess or obtain a password later, they still need a second verification step. Enable 2FA anywhere SoundCloud or connected services offer it.

4) Lock down your email account 

Your email is the real target after most breaches. If someone gains access to it, they can reset passwords everywhere else. Use a strong, unique password for your email account and turn on two-factor authentication. Review recovery emails and phone numbers to make sure they still belong to you.

DATA BREACH EXPOSES 400,000 BANK CUSTOMERS’ INFO

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5) Reduce your online data footprint

Attackers use breached emails to search data broker sites and social platforms for more details. The less data available, the harder you are to target. Consider a data removal service to limit how often your email and personal details appear across the web.

While no service can guarantee the complete removal of your data from the internet, a data removal service is really a smart choice. They aren’t cheap, and neither is your privacy. These services do all the work for you by actively monitoring and systematically erasing your personal information from hundreds of websites. It’s what gives me peace of mind and has proven to be the most effective way to erase your personal data from the internet. By limiting the information available, you reduce the risk of scammers cross-referencing data from breaches with information they might find on the dark web, making it harder for them to target you.

Check out my top picks for data removal services and get a free scan to find out if your personal information is already out on the web by visiting Cyberguy.com

Get a free scan to find out if your personal information is already out on the web: Cyberguy.com

6) Check your other accounts for suspicious activity

Attackers often reuse exposed email addresses to test logins across streaming services, social media and shopping accounts. Watch for password reset emails you did not request or login alerts from unfamiliar locations. If something looks off, act fast.

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Security researchers linked the breach to the ShinyHunters extortion group, which later attempted to pressure SoundCloud for payment. (Thomas Trutschel/Photothek via Getty Images)

Kurt’s key takeaways

Data breaches no longer stay contained to one app or one moment in time. Even when attackers expose information that looks harmless, the fallout can last much longer. The SoundCloud breach shows how public profile data paired with private contact details creates real exposure. Staying alert, limiting data sharing and using strong security habits remain your best defense as breaches continue to escalate.

Have you checked which old or forgotten accounts still expose your email and could be putting you at risk right now? Let us know your thoughts by writing to us at Cyberguy.com

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Sign up for my FREE CyberGuy Report Get my best tech tips, urgent security alerts and exclusive deals delivered straight to your inbox. Plus, you’ll get instant access to my Ultimate Scam Survival Guide — free when you join my CYBERGUY.COM newsletter 

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Copyright 2026 CyberGuy.com.  All rights reserved.

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Former Tumblr head Jeff D’Onofrio steps in as acting CEO at the Washington Post

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Former Tumblr head Jeff D’Onofrio steps in as acting CEO at the Washington Post

After what can generously be called a contentious tenure as the CEO of The Washington Post, Will Lewis is stepping down following mass layoffs this week. Jeff D’Onofrio, former CEO of Tumblr from 2017 to 2022, will step in as acting CEO and publisher. D’Onofrio has been CFO at the Post since June of last year, meaning he’s had a front row seat to Jeff Bezos’ dismantling of the once storied paper for the last nine months.

D’Onofrio’s resume doesn’t include extensive experience in traditional news media, nor many notable success stories. He was briefly the general manager of Yahoo News while it was still a Verizon property, before shifting his focus solely to Tumblr. Under his leadership, Tumblr tried to clean up its image by banning adult content, but its traffic fell by 30 percent. Yahoo had purchased Tumblr for $1.1 billion in 2013. By 2019, it was sold to Automatic, the owner of WordPress, reportedly for less than $3 million.

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