Technology
Half a million patients' personal info stolen in massive health care data breach
Data breaches happen all the time, and while no data breach should be ignored, those involving health care institutions require special attention.
These breaches can be very damaging and haunt people for life. Recently, hackers leaked the personal data of around 500,000 Americans.
They breached the databases of the Center for Vein Restoration (CVR), which claims to be “America’s largest physician-led vein center,” stealing not just personal data but also medical records.
GET SECURITY ALERTS, EXPERT TIPS – SIGN UP FOR KURT’S NEWSLETTER – THE CYBERGUY REPORT HERE
A doctor filling out a form (Kurt “CyberGuy” Knutsson)
What you need to know
CVR, a clinic headquartered in Maryland, experienced a massive data breach where hackers stole highly sensitive personal information, including lab results and health insurance details, as reported by Cybernews. The breach occurred in early October, with the clinic detecting “unusual activity” in its systems on Oct. 6.
CVR has more than 110 branches across the country, from Alabama to Alaska. This breach has affected hundreds of thousands of individuals. According to a notice filed by CVR with the U.S. Department of Health and Human Services Office for Civil Rights, more than 445,000 people had their personal information compromised.
As the name suggests, CVR specializes in vein restoration, a very specialized procedure aimed at improving the health and function of veins. This means the clinic keeps a very elaborate record of its patients’ health, and now all that is in the hands of hackers, along with copious amounts of personal information.
The full list of exposed data includes addresses, dates of birth, Social Security numbers, driver’s license numbers, medical record numbers, diagnoses, lab results, medications, treatment information, health insurance information, provider names, dates of treatment and financial information.
The inside of a health care center (Kurt “CyberGuy” Knutsson)
WINDOWS FLAW LETS HACKERS SNEAK INTO YOUR PC OVER WI-FI
The risks associated with the CVR data breach
The risks of data breaches depend on the type of company affected. For instance, breaches involving companies like Ticketmaster are generally more manageable because they often expose information like contact details, addresses and, in some cases, identification documents. Even if financial data is leaked, it can typically be mitigated by replacing or blocking compromised accounts.
Health care data breaches, however, are far more severe. When companies like CVR are targeted, hackers gain access to sensitive medical records that cannot be altered. Your medical history is permanent and highly sought after on the dark web. Cybercriminals can use this information to commit identity fraud, such as obtaining prescription drugs through false insurance claims. Plus, detailed knowledge of medical treatments, lab results and medications allows attackers to create highly targeted phishing scams, exploiting victims’ vulnerabilities with alarming precision.
We reached out to CVR for a comment but did not hear back before our deadline.
WHAT IS ARTIFICIAL INTELLIGENCE (AI)?
An emergency room sign (Kurt “CyberGuy” Knutsson)
CYBER SCAMMERS USE AI TO MANIPULATE GOOGLE SEARCH RESULTS
7 ways to keep yourself safe from such data breaches
1. Regularly monitor your financial and medical accounts: Periodically review your medical records and health insurance statements for any unusual or unauthorized activity. This can help you quickly identify and address any discrepancies or fraudulent activities.
Use patient portals provided by health care providers to access your medical records online. These portals often have features that allow you to track your medical history and appointments.
2. Use strong passwords and two-factor authentication: Create strong, unique passwords for your online accounts, including health care portals. Avoid using easily guessable information like birthdays or common words. Consider using a password manager to generate and store complex passwords.
3. Enable two-factor authentication (2FA) wherever possible: 2FA adds an extra layer of security by requiring a second form of verification, such as a text message code or authentication app, in addition to your password.
4. Don’t fall for phishing scams; use strong antivirus software: Be mindful of the information you share online and with whom you share it. Avoid providing sensitive personal information, such as Social Security numbers or medical details, unless absolutely necessary. Verify the legitimacy of any requests for personal information. Scammers often pose as health care providers or insurance companies to trick you into revealing sensitive data by asking you to click on links in emails or messages.
The best way to safeguard yourself from malicious links that install malware, potentially accessing your private information, is to have 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 2024 antivirus protection winners for your Windows, Mac, Android and iOS devices.
5. Use identity theft protection services: Consider enrolling in identity theft protection services that monitor your personal information and alert you to potential threats. These services can help you detect and respond to identity theft more quickly. Some identity theft protection services also offer insurance and assistance with recovering from identity theft, providing additional peace of mind. See my tips and best picks on how to protect yourself from identity theft.
6. Freeze your credit: A credit freeze prevents anyone from opening new credit accounts in your name without your authorization, reducing the risk of identity theft. Contact the major credit bureaus (Experian, Equifax and TransUnion) to request a credit freeze. This is often free and can be temporarily lifted when you need to apply for credit.
7. Remove your personal data from the internet: After being part of a data breach, it’s crucial to minimize your online presence to reduce the risk of future scams. Consider using a personal data removal service that can help you delete your information from various websites and data brokers. This can greatly diminish the chances of your data being used maliciously. Check out my top picks for data removal services here.
DON’T LET SNOOPS NEARBY LISTEN TO YOUR VOICEMAIL WITH THIS QUICK TIP
Kurt’s key takeaway
The CVR data breach is deeply troubling, affecting nearly half a million individuals and exposing highly sensitive medical and personal information. What makes this breach particularly concerning is the lasting impact health care data leaks can have on victims, from identity theft to targeted phishing scams. Whether or not you’ve been directly affected, it’s a stark reminder to take proactive steps, such as monitoring your accounts, enabling multifactor authentication and staying alert to phishing attempts.
Do you think companies are doing enough to protect sensitive data, especially in health care? Let us know by writing us at Cyberguy.com/Contact.
For more of my tech tips and security alerts, subscribe to my free CyberGuy Report Newsletter by heading to Cyberguy.com/Newsletter.
Ask Kurt a question or let us know what stories you’d like us to cover.
Follow Kurt on his social channels:
Answers to the most asked CyberGuy questions:
New from Kurt:
Copyright 2024 CyberGuy.com. All rights reserved.
Technology
Samsung ad confirms rumors of a useful S26 ‘privacy display’
Samsung has released a new advertisement for its upcoming Galaxy S26 launch that all-but confirms rumors of a new display with a built-in privacy mode. Leaked videos show that the feature could be capable of entirely blacking out content from specific apps or parts of the display when viewed at an angle.
The new advert shows a woman reading a racy romance novel on a subway, while curious passengers look over her shoulder. An overlay shows a quick flick of a “Zero-peeking privacy” toggle, which blacks out the titillating content for the nosy onlookers.
That might sound similar to existing privacy filters, which have been available as after-market screen protectors for years, or found built into products including certain HP laptops. But leaks say what Samsung has in store for the S26 range is different.
It will reportedly use a new type of OLED panel that Samsung Display first debuted two years ago at MWC 2024 called Flex Magic Pixel. It allows viewing angles to be adjusted on a pixel-by-pixel basis, so the privacy effect is only applied to certain parts of the screen at a time. Combined with some AI, that means it could automatically protect sensitive information in a banking app, or be used to hide notifications in a messaging app, as shown in this short video clip shared by the reliable leaker Ice Universe.
We’ll find out more soon enough — Samsung has confirmed that its Unpacked launch event will take place later this month, on February 25th.
Technology
Fake ad blocker breaks PCs in new malware extension scam
NEWYou can now listen to Fox News articles!
Fake browser extensions are nothing new, but this one takes things a step further by deliberately breaking your computer to scare you into infecting it.
Security researchers have uncovered a malicious Chrome and Edge extension called NexShield that pretends to be a fast, privacy-friendly ad blocker. Once installed, it crashes your browser on purpose and then tricks you into “fixing” the problem by running dangerous commands on your own PC.
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.
MALICIOUS GOOGLE CHROME EXTENSIONS HIJACK ACCOUNTS
A fake Chrome and Edge extension called NexShield crashes browsers to trick users into running malicious commands. (Sina Schuldt/picture alliance via Getty Images)
How the NexShield ad blocker scam works
NexShield was promoted as a lightweight ad blocker supposedly created by Raymond Hill, the real developer behind the popular uBlock Origin extension. That claim was false, but it helped the extension look legitimate enough to spread through online ads and search results before it was taken down from the Chrome Web Store.
Once installed, NexShield immediately starts abusing Chrome or Edge in the background. Researchers at Huntress found that it opens endless internal browser connections until your system runs out of memory (via Bleeping Computer). Tabs freeze, CPU usage spikes, RAM fills up and the browser eventually hangs or crashes completely.
After you restart the browser, NexShield displays a scary pop-up warning that claims your system has serious security problems. When you click to “scan” or “fix” the issue, you’re shown instructions telling you to open Command Prompt and paste a command that’s already been copied to your clipboard.
That single paste is the trap. The command launches a hidden PowerShell script that downloads and runs malware. To make detection harder, the attackers delay the payload execution for up to an hour after installation, creating distance between the extension and the damage it causes.
Why this fake browser extension attack is especially dangerous
This campaign is a new variation of the well-known ClickFix scam, which relies on convincing you to run commands yourself. Huntress calls this version CrashFix because instead of faking a system failure, it causes a real one.
In corporate environments, the attack delivers a Python-based remote access tool called ModeloRAT. This malware allows attackers to spy on systems, run commands, change system settings, add more malware and maintain long-term access. Researchers say the threat group behind it, tracked as KongTuke, appears to be shifting focus toward enterprise networks where the payoff is higher.
Home users weren’t the primary target in this campaign, but that doesn’t mean they’re safe. Even if the final payload was unfinished for consumer systems, uninstalling the extension alone is not enough. Some malicious components can remain behind. The biggest danger here isn’t a browser bug. It’s trust. The attack works because it looks like a helpful fix from a trusted tool, and it pressures you to act quickly while your system feels broken.
“Microsoft Defender provides built in protections to help identify and stop malicious or unwanted browser extensions and the harmful behaviors associated with them,” Tanmay Ganacharya, VP of Microsoft Threat Protection, told CyberGuy. “Our security technologies are designed to detect and mitigate tactics like the ones described in this campaign, and they are continuously updated to help keep customers safe. We encourage consumers and organizations to follow our security best practices for reducing exposure to social engineering based threats. Guidance on strengthening your security posture against techniques like this can be found in our blog, Think Before You Click(Fix): Analyzing the ClickFix Social Engineering Technique, on the Microsoft Security blog.”
We also reached out to Google for comment.
7 steps you can take to stay safe from malicious browser extensions
A few smart habits and the right tools can dramatically reduce your risk, even when malicious extensions slip past official app stores.
1) Only install extensions from trusted publishers
Before installing any browser extension, check the publisher name, official website and update history. Reputable tools clearly identify their developer and have years of user reviews. Be cautious of “new” extensions that claim to come from well-known creators, especially if the name or branding looks slightly off.
2) Never run unknown commands
No legitimate browser extension will ever ask you to open Command Prompt or paste a command to fix an issue. That’s a massive red flag. If something breaks your browser and then tells you to run system commands, close it and seek help from a trusted source.
3) Use a strong antivirus
Strong antivirus software can detect malicious scripts, suspicious PowerShell activity and remote access tools like ModeloRAT. This is especially important because these attacks rely on delayed execution that basic defenses might miss.
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 and iOS devices at Cyberguy.com.
MALICIOUS MAC EXTENSIONS STEAL CRYPTO WALLETS AND PASSWORDS
After freezing your browser, the rogue extension urges users to paste a PowerShell command that installs malware. (Annette Riedl/picture alliance via Getty Images)
4) Use a password manager to limit fallout
If malware gains access to your system, stored browser passwords are often the first target. A password manager keeps credentials encrypted and separate from your browser, reducing the risk of account takeover even if something slips through.
Next, see if your email has been exposed in past breaches. Our No. 1 password manager 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.
5) Keep Windows, Chrome and Edge fully updated
Security updates don’t just patch bugs. They also improve protection against malicious extensions, script abuse and unauthorized system changes. Turn on automatic updates so you’re not relying on memory to stay protected.
6) Consider an identity theft protection service
If malware ever runs on your system, assume personal data could be at risk. Identity protection services can monitor for misuse of your information, alert you early and help with recovery if fraud occurs.
Identity Theft companies can monitor personal information like your Social Security Number (SSN), phone number and email address, and alert you if it is being sold on the dark web or being used to open an account. They can also assist you in freezing your bank and credit card accounts to prevent further unauthorized use by criminals.
See my tips and best picks on how to protect yourself from identity theft at Cyberguy.com.
7) Reduce your online footprint with a data removal service
Many attacks become more effective when criminals already have your personal details. Data removal services help pull your information from broker sites, making it harder for attackers to craft convincing follow-up scams or targeted phishing.
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.
FAKE ERROR POPUPS ARE SPREADING MALWARE FAST
Security researchers say the NexShield ad blocker scam deliberately overloads memory to force a system crash. (Photo by Sebastian Gollnow/picture alliance via Getty Images)
Kurt’s key takeaway
Cybercriminals are getting better at blending technical tricks with psychological pressure. Instead of relying on exploits alone, they break things on purpose and wait for you to panic. If a browser extension crashes your system and then tells you to “fix” it by running commands, stop immediately. The safest response is not to fix the problem fast, but to question why you’re being asked to fix it at all.
How many browser extensions are installed on your computer right now? Let us know by writing to us at Cyberguy.com.
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.
Copyright 2026 CyberGuy.com. All rights reserved.
Technology
OpenClaw founder Peter Steinberger is joining OpenAI
I could totally see how OpenClaw could become a huge company. And no, it’s not really exciting for me. I’m a builder at heart. I did the whole creating-a-company game already, poured 13 years of my life into it and learned a lot. What I want is to change the world, not build a large company and teaming up with OpenAI is the fastest way to bring this to everyone.
-
Alabama1 week agoGeneva’s Kiera Howell, 16, auditions for ‘American Idol’ season 24
-
Illinois1 week ago2026 IHSA Illinois Wrestling State Finals Schedule And Brackets – FloWrestling
-
Technology1 week agoApple might let you use ChatGPT from CarPlay
-
Culture7 days agoTry This Quiz on Passionate Lines From Popular Literature
-
News1 week ago
Hate them or not, Patriots fans want the glory back in Super Bowl LX
-
Technology1 week agoWe found 20 Verge-approved gifts on sale ahead of Valentine’s Day
-
Politics1 week agoVirginia Dems take tax hikes into overtime, target fantasy football leagues
-
Politics1 week agoWest Virginia worked with ICE — 650 arrests later, officials say Minnesota-style ‘chaos’ is a choice