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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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Technology

Judge sides with Anthropic to temporarily block the Pentagon’s ban

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Judge sides with Anthropic to temporarily block the Pentagon’s ban

After Anthropic’s weeks-long standoff with the Pentagon, the company won one milestone: A judge granted Anthropic a preliminary injunction in its lawsuit, which sought to reverse its government blacklisting while the judicial process plays out.

“The Department of War’s records show that it designated Anthropic as a supply chain risk because of its ‘hostile manner through the press,’” Judge Rita F. Lin, a district judge in the northern district of California, wrote in the order, which will go into effect in seven days. “Punishing Anthropic for bringing public scrutiny to the government’s contracting position is classic illegal First Amendment retaliation.”

A final verdict could be weeks or months out.

Anthropic spokesperson Danielle Cohen said in a Thursday statement, “We’re grateful to the court for moving swiftly, and pleased they agree Anthropic is likely to succeed on the merits. While this case was necessary to protect Anthropic, our customers, and our partners, our focus remains on working productively with the government to ensure all Americans benefit from safe, reliable AI.”

“I do think this case touches on an important debate,” Judge Lin said during the Tuesday hearing. “On the one hand, Anthropic is saying that its AI product, Claude, is not safe to use for autonomous lethal weapons and domestic mass surveillance. Anthropic’s position is that if the government wants to use its technology, the government has to agree not to use it for those purposes. On the other hand the Department of War is saying that military commanders have to decide what is safe for its AI to do.”

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On Tuesday, Judge Lin went on to say, “It’s not my role to decide who’s right in that debate… The Department of War decides what AI product it wants to use and buy. And everyone, including Anthropic, agrees that the Department of War is free to stop using Claude and look for a more permissive AI vendor.” She added, “I see the question in this case as being … whether the government violated the law when it went beyond that.”

It all started with a memo sent by Defense Secretary Pete Hegseth on Jan. 9, calling for “any lawful use” language to be written into any AI services procurement contract within 180 days, which would include existing contracts with companies like Anthropic, OpenAI, xAI, and Google. Anthropic’s negotiations with the Pentagon stretched on for weeks, hinging on two “red lines” that the company did not want the military to use its AI for: domestic mass surveillance and lethal autonomous weapons (or AI systems with the power to kill targets with no human involvement in the decision-making process). The rollercoaster series of events that followed has included a barrage of social media insults, a formal “supply chain risk” designation with the potential to significantly handicap Anthropic’s business, competing AI companies swooping in to make deals, and an ensuing lawsuit.

With its lawsuit, Anthropic argues that it was punished for speech protected under the First Amendment, and it’s seeking to reverse the supply chain risk designation.

It’s rare, and potentially even unheard of until now, for a US company to be named a supply chain risk, a designation typically reserved for non-US companies potentially linked to foreign adversaries. Anthropic’s designation as such raised eyebrows nationwide and caused bipartisan controversy due to concerns that disagreeing with a presidential administration could potentially lead to outsized retribution for a business in any sector.

Anthropic’s own business has been significantly affected by the designation, according to its court filings, which say that it has “received outreach from numerous outside partners … expressing confusion about what was required of them and concern about their ability to continue to work with Anthropic” and that “dozens of companies have contacted Anthropic” for guidance or information about their rights to terminate usage. Depending on the level to which the government prohibits its contractors’ work with Anthropic, the company alleged that revenue adding up to between hundreds of millions and multiple billions could be at risk.

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During Tuesday’s hearing, both companies had a chance to respond to Judge Lin’s questions, which were released in a document the day prior and hinged on matters like whether Hegseth lacked authority to issue certain directives and why Anthropic was named a supply chain risk. The judge also asked, in her pre-released questions, about the circumstances under which a government contractor could face termination for using Anthropic’s technology in their work — for instance, “if a contractor for the Department uses Claude Code as a tool to write software for the Department’s national security systems, would that contractor face termination as a result?”

On Tuesday, the judge also seemed to admonish the Department of War for Hegseth’s X post that caused a lot of widespread confusion per Anthropic’s earlier court filings, stating that “effective immediately, no contractor, supplier, or partner that does business with the United States military may conduct any commercial activity with Anthropic.”

“You’re standing here saying, ‘We said it but we didn’t really mean it,’” Judge Lin said during the hearing, later pressing on the question of why Hegseth wrote the above barring contractors from working with Anthropic instead of just simply designating Anthropic as a supply chain risk.

In a series of questions on Tuesday, Judge Lin asked whether the Department of War plans to terminate contractors on the basis of their work with Anthropic if it’s separate from their work with the department, and a representative for the Department of War responded, “That is my understanding.”

Judge Lin asked, “Let’s say I’m a military contractor. I don’t provide IT to the military. I provide toilet paper to the military. I’m not going to be terminated for using Anthropic — is that accurate?” The representative for the Department of War responded, “For non-DoW work, that is my understanding.” But when the judge asked whether a military contractor providing IT services to the Department of War, but not for national security systems, could be terminated for using Anthropic, the representative for the Department of War did not give a concrete answer.

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During the hearing, Judge Lin cited one of the amicus briefs, which she said used the term “attempted corporate murder.” She said, “I don’t know if it’s ‘murder,’ but it looks like an attempt to cripple Anthropic.”

“We are continuing to be irreparably injured by this directive,” a lawyer for Anthropic said during the hearing, citing Hegseth’s nine-paragraph X post.

In a recent court filing, the Department of Defense alleged that Anthropic could ostensibly “attempt to disable its technology or preemptively alter the behavior of its model either before or during ongoing warfighting operations” in the event it felt the military was crossing its red lines — a theoretical situation that the Pentagon said it deemed an “unacceptable risk to national security.” The judge’s pre-released questions seem to challenge that statement, or at least request more information on it, stating, “What evidence in the record shows that Anthropic had ongoing access to or control over Claude after delivering it to the government, such that Anthropic could engage in such acts of sabotage or subversion?”

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Technology

Drone food delivery launches in New Jersey

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Drone food delivery launches in New Jersey

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You place a food order, check your phone, and instead of a driver pulling up, a drone lowers your meal to your front yard. That scenario is already playing out in the Garden State. But before you get too excited, this is still a limited test.

Grubhub just launched New Jersey’s first drone-powered food delivery pilot, and it is getting plenty of attention. The three-month program kicked off on March 18 in Green Brook, just a few miles from Middlesex. If you live within about 2.5 miles of the location, you may be able to try it yourself.

Even better, you will not pay anything extra to choose the drone option.

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YOUR DOORDASH ORDER MIGHT ARRIVE FROM THE SKY AS DRONE DELIVERIES TAKE OFF
 

Grubhub launches a three-month drone delivery test in New Jersey, offering faster drop-offs with no added cost. (Grubhub)

How the drone delivery program works

The program is based out of Wonder’s Green Brook location, which operates a multi-restaurant kitchen. That means your order can come from one of 15 different food concepts, all prepared in the same place.

Here is how it works step by step:

  • You order through the Grubhub app
  • You select drone delivery if you are eligible
  • Your food is prepared and secured by trained staff
  • A drone flies it along a pre-approved route
  • The order is lowered safely to the ground using a tether

You can track everything in real time, just like a regular delivery. It feels familiar, but the final step looks very different.

Why this could be faster than your usual delivery

Timing matters when you are hungry. That is where drones may have a real advantage. Unlike drivers, drones do not deal with traffic, stoplights or parking. They fly directly to your location using optimized flight paths.

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Grubhub says deliveries should arrive faster than traditional methods. While that will vary based on conditions, the goal is simple. Less waiting, more eating. This test will help the company see if that promise holds up in real neighborhoods.

AIR TAXIS IN THE US COULD LAUNCH THIS SUMMER
 

New Jersey residents within range can order food by drone, with real-time tracking and tethered drop-offs. (Grubhub)

The tech behind the delivery drones

The program uses the DE-2020 drone from Dexa, a company that specializes in autonomous delivery systems.

This is not a hobby drone. It is a fully automated aircraft built for commercial use.

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Key features include:

  • FAA-certified operations for safety and compliance
  • Secure communication systems during flight
  • Controlled drop-off using a tether system
  • Pre-planned routes to reduce noise and disruption

Before each flight, crews check that food is packaged and secured properly. That step helps prevent spills or issues mid-air. In short, there is a lot more going on behind the scenes than a simple takeoff and landing.

We reached out to Grubhub, and a spokesperson shared the following statement:

“Our partnership with Dexa represents a major step forward in Grubhub’s commitment to delivery innovation,” said Abhishek “PJ” Poykayil, SVP of customer delivery operations at Wonder and Grubhub. “By connecting Grubhub’s marketplace expertise, Wonder’s innovative mealtime platform, and Dexa’s expansive drone technology, we’re proud to introduce a faster and more efficient way for New Jersey diners to experience food delivery without compromising safety or reliability.”

We also reached out to Dexa for more insight into the technology behind the program. CEO and founder Beth Flippo shared the following with CyberGuy:

“At Dexa, we’re proud to be powering the underlying autonomous technology that enables this new generation of on-demand delivery. Our partnership with Grubhub brings together their industry-leading logistics network with our advanced autonomy platform, which is designed to safely navigate complex environments, optimize real-time routing, and operate reliably without the need for continuous human intervention. This is a meaningful step toward a future where autonomous systems are woven seamlessly into everyday life, from delivering food and goods to supporting transportation, infrastructure and critical services. As consumers continue to expect faster, more efficient and more sustainable options, autonomy will play a central role in meeting those expectations at scale.”

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FORGET DRONES, THIS STREET-SMART ROBOT COULD BE FUTURE OF LOCAL DELIVERIES
 

Autonomous drones designed by Dexa deliver meals from a central kitchen, bypassing traffic in a new suburban pilot program. (Grubhub)

Why companies are pushing drone delivery now

This move is not random. It is part of a bigger shift in how companies think about delivery. You and I want speed, convenience and reliability. At the same time, businesses want to reduce costs and scale faster. Drone delivery sits right in the middle of that.

It removes many of the delays tied to traditional delivery. It also opens the door to new models, especially in suburban areas where distances are manageable.

We are already seeing this play out in other parts of the country. Companies like Wing, backed by Google’s parent company Alphabet, have been testing and expanding drone deliveries for food, retail and small packages in select U.S. markets.

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This New Jersey test is another step in that direction, and it shows how quickly the space is evolving.

What this means to you

Even if you are not in Green Brook, New Jersey, this still matters. Here is why:

You may get faster deliveries

If this works, shorter delivery times could become the new normal.

You could see more delivery options

Apps may soon offer choices like driver, robot or drone depending on your location.

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It could change delivery costs

Right now, there is no added fee. In the future, pricing models may shift based on speed and demand.

Your neighborhood may see more drones

That raises questions about noise, safety and privacy that communities will need to address.

This is not only about food. The same technology could expand to groceries, retail and even medical supplies.

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Kurt’s key takeaways

It is easy to see drone delivery as some sort of cool experiment. But something bigger is starting to take shape right above us. For the first time, the sky is becoming part of everyday delivery. Today it is takeout. Tomorrow it could be groceries, last-minute essentials or even urgent supplies. If this technology proves reliable, and we get comfortable with it, the way you get what you need could change faster than you expect. So the next time you hear a faint buzz overhead, you may want to look up. It might not be a plane. It could be your dinner on the way. The real question is not if drones will become part of daily life. It is how soon you will be tracking one to your doorstep.

Would you trust a drone to deliver your next meal? Why or why not? Let us know by writing to us at Cyberguy.com

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Netflix is raising prices again

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Netflix is raising prices again

Netflix’s prices just went up, with its cheapest, ad-supported tier now reaching $8.99 / month (up from $7.99 / month), according to an updated support page spotted earlier by Android Authority. The standard and premium plans are also getting a hike, going from $17.99 to $19.99 / month and $24.99 to $26.99 / month, respectively.

Netflix didn’t share its reasoning for the price hike this time around, as it last cited delivering “more value for our customers.” It’s also unclear when the price hike will go into effect for existing subscribers. The Verge reached out to Netflix with a request for comment but didn’t immediately hear back.

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