Technology
Think twice before using public computers: Here's why
Ever found yourself in a pinch, needing to check your email or print a document while you’re out and about? Maybe you’re traveling and need to send a quick message, or perhaps you’re at a coffee shop and want to catch up on work. Public computers in libraries, hotel lobbies or internet cafes might seem like a lifesaver in these moments. But hold up. Before you start typing away, let’s discuss why you should think twice before using these shared machines.
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Public computers may seem convenient, but there are hidden dangers. (Kurt “CyberGuy” Knutsson)
The sneaky dangers of public computers
1) Malware mayhem
Here’s a situation you may be confronted with. You’re checking your social media on a library, cafe or hotel lobby computer, but little do you know, there’s a digital gremlin lurking in the background. Yep, malware on public computers. These nasty programs can snatch your passwords, personal messages and even financial details faster than you can say “identity theft.”
2) Privacy? What privacy?
Using a public computer is like having a conversation in a crowded room: everyone can potentially hear (or see) what you’re up to. Browsers on these machines might be set up to remember everything you do. Your search history, saved passwords and that embarrassing social media video you watched? All are potentially up for grabs by the next user.
Public computers at a library (Kurt “CyberGuy” Knutsson)
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3) Session hijacking
Imagine logging into your email and then grabbing a coffee while still logged in. In that brief moment, a tech-savvy criminal could hijack your active session, gaining full access to your account without needing your password. They could send emails as you, access your contacts or worse, all while you’re blissfully unaware.
4) Shoulder surfing
Public computers are often in busy areas where anyone can glance at your screen. A seemingly innocent bystander could be memorizing your passwords, credit card details or other sensitive information as you type. This low-tech but effective method of information theft is surprisingly common.
5) USB port peril
Those convenient USB ports on public computers? They might be secretly housing “USB killers,” which are devices that can fry your external drive or smartphone when plugged in. Or worse, they could be set up to automatically copy data from any device connected to them.
6) Fake login pages
Cybercriminals sometimes set up convincing fake login pages on public computers. You think you’re logging into your account, but you’re actually handing your credentials directly to a hacker. These phishing attempts can be incredibly sophisticated and hard to spot.
7) Screen capture software
Some public computers may have screen capture software installed, taking periodic screenshots of user activity. This means even if you’re careful about what you type, sensitive information displayed on the screen could still be captured and stored.
8) Compromised hardware
It’s not just the software you need to worry about. Hardware keyloggers – small devices that record every keystroke – can be physically attached to public computers without being easily noticeable. These devices can capture everything you type, from passwords to private messages.
By understanding these hidden risks, you can better protect yourself when using public computers. Remember, when it comes to shared machines, it’s always better to err on the side of caution.
Public computers at a library (Kurt “CyberGuy” Knutsson)
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Best practices on a public computer
Alright, sometimes you just gotta use a public computer. I get it. But let’s make sure you’re not leaving digital breadcrumbs for the bad guys to follow:
- Go incognito: Always use private browsing mode. It’s like wearing an invisibility cloak for your internet activities.
- Log out, log out, log out: Triple-check that you’ve signed out of all accounts before you walk away.
- Avoid sensitive stuff: Please, oh please don’t check your bank account or shop online using public computers. Save that for your secure home setup.
- USB caution: Thinking of plugging in your USB drive? Think again. It’s an easy way to catch a digital virus.
- Clear your tracks: Delete your browsing history, cache and any downloaded files. Leave no trace.
People working on computers at a library (Kurt “CyberGuy” Knutsson)
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How to clear your tracks after using a public computer
Here’s how to cover your digital footprints on different browsers when using a public computer. Be sure to do this before you log out:
Chrome:
- Launch the Google Chrome browser on your computer.
- Click the three dots in the top right corner of the browser window.
- Tap History
- Scroll down and click on Delete browsing data.
- In the dialog that appears, select All time from the time range drop-down.
- Check all boxes for the types of data you want to clear, such as Browsing history
- Click on Delete data to complete the process
Firefox:
- Click the menu button (three lines) in the top right
- Choose Settings
- Tap Privacy & Security
- Under Cookies and Site Data, click Clear Data (Select History, Cookies and site data and temporary cached files and pages)
Safari:
- Click Safari in the top menu
- Select Clear History
- Choose all history from the drop-down menu
- Click Clear History
Edge:
- Click the three dots in the top right
- Go to Settings
- Tap Privacy, Search, and Services
- Under Delete browsing data, click Choose what to clear
- Select all options and click Clear now
What if I use my own device on public Wi-Fi?
Using your own device is definitely safer than a public computer, but hold your horses: Public Wi-Fi can still be a digital minefield. Here’s how to stay safe when you’re surfing on public networks:
1) Use a VPN: Using a VPN helps protect you against being tracked and helps you identify your potential location on the websites you visit. Many sites can read your IP address and, depending on their privacy settings, may display the city from which you are corresponding. A VPN will disguise your IP address to show an alternate location. For the best VPN software, see my expert review of the best VPNs for browsing the web privately on your Windows, Mac, Android and iOS devices.
2) Have strong antivirus software: 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.
3) Avoid sensitive transactions: Still not the best place for online banking or shopping. Save that for your secure home network.
4) Keep your software updated: Those pesky update notifications? They often include important security patches. So be sure to update your software on all your devices regularly.
5) Use two-factor authentication: 2FA is like having a second lock on your digital door.
By implementing these precautions, you can greatly minimize the risks linked to using public Wi-Fi. Always opt for your personal device with the right security measures instead of a public computer when accessing open networks. If you choose to use your own device – an option I highly recommend – consider avoiding public Wi-Fi altogether in such environments. Instead, you can utilize your iPhone or Android as a mobile hot spot for a more secure connection. A person using their phone as a hot spot for their laptop (Kurt “CyberGuy” Knutsson)
While navigating the potential pitfalls of public computers can feel daunting, your local library offers a wealth of free digital resources that can enhance your online experience without the associated risks. From borrowing e-books and audiobooks with apps like Libby and Hoopla to accessing free movies and career advice through Kanopy and LinkedIn Learning, libraries are treasure troves of valuable services. Are you curious about the tech goodies your library offers? Check out our article on free perks from the library. You might be pleasantly surprised by what’s available.
Public computers at a library (Kurt “CyberGuy” Knutsson)
We’ve covered a lot of ground here, from the sneaky dangers lurking on public computers to the do’s and don’ts of using public Wi-Fi. The bottom line? Be cautious, be smart and always prioritize your digital safety. Remember, while public computers and Wi-Fi can be lifesavers in a pinch, they’re not without risks. If you absolutely must use them, follow our tips to minimize your exposure. But whenever possible, stick to your own devices and secure networks.
Have you ever faced any security issues while using public computers or Wi-Fi? If so, how did you handle the situation? 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.
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Perks at public libraries
Kurt’s key takeaways
OpenAI announced yet another reorganization Friday, consolidating certain areas and making company president Greg Brockman the official lead of all things product.
In a memo viewed by The Verge, Brockman wrote that since OpenAI’s product strategy for this year is to go all-in on AI agents, the company is combining its products to “invest in a single agentic platform and to merge ChatGPT and Codex into one unified agentic experience for all.”
To do this, the company is making a suite of org chart changes, although it’s still operating under some of the same ones from last month. That’s when AGI boss Fidji Simo went on medical leave and OpenAI announced that Brockman would be in charge of product strategy and CSO Jason Kwon, CFO Sarah Friar, and CRO Denise Dresser would take control of business operations.
It’s all part of OpenAI’s recent strategic shift to focus on key revenue drivers like coding and enterprise and stop pouring resources into “side quests” ahead of its potential IPO later this year and amid investor pressure to turn a profit.
In Simo’s continued absence, Brockman’s role leading product strategy is now official, as well as the company’s “scaling” arm. Under Brockman will be four different pillars. The first is core product and platform, led by Thibault Sottiaux, who has been OpenAI’s engineering lead for Codex, and the second is critical enterprise industries, led by ChatGPT head Nick Turley. Third is the consumer pillar, such as health, commerce, and personal finance, which will be led by Ashley Alexander, who has been its healthcare products VP. The fourth pillar — core infrastructure, ads, data science, and growth — will be led by Vijaye Raji, who has been OpenAI’s CTO of applications.
Brockman wrote in the memo that OpenAI’s goal is now to “bring agents to ChatGPT scale, in order to give individuals and organizations significantly more value and utility from our products.”
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You’re going about your day when your phone buzzes. A text hits your phone. It looks official. It sounds urgent. And suddenly, you are being told you owe money for a traffic violation. That is exactly what Todd from Texas experienced. He emailed us and said:
“I received this text message today. It was so baffling because I haven’t lived in California for nearly a decade. I didn’t click on anything or respond. How can I tell if this is for real or if this is a scam?”
If you’ve gotten a message like this, you are not alone. This type of scam is spreading fast, and it is designed to pressure you into acting before you think. Let’s break down what is really going on.
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FAKE AGENT PHONE SCAMS ARE SPREADING FAST ACROSS THE US
This message may look official, but several red flags show it is likely a scam designed to pressure you into paying quickly. (Kurt “CyberGuy” Knutsson)
What the traffic ticket scam text looks like
At first, the message seems convincing. It claims to be a “final reminder” from the California DMV, and it warns of penalties like license suspension and added fees. It even includes a link that appears somewhat official. However, once you slow down and take a closer look, the red flags quickly start to pile up.
The biggest red flags in this message
Here are the key warning signs to watch for in messages like this.
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1) The phone number makes no sense
The message comes from a number with a +63 country code. That is the Philippines, not California. Government agencies in the U.S. do not send official legal notices from international numbers. That alone is a major warning sign.
2) No name, just “Dear Driver”
Legitimate notices from a DMV or court almost always include your full name or at least some identifying information. “Dear Driver” is vague on purpose. It allows scammers to send the same message to thousands of people.
3) The link isn’t a real DMV website
The message includes this link:
ca.mnvtl.life/dmv
That isn’t a government domain. Official DMV websites in California use “.ca.gov” or similar trusted domains. Scammers often create lookalike links to trick you into clicking.
4) Urgency and threats
The message pushes you to act quickly with a deadline. It lists consequences like license suspension and extra charges. Scammers rely on fear. When you feel rushed, you are more likely to click without thinking.
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5) Asking you to reply to proceed
The text says to reply with “Y” to get instructions. That is another trap. Responding confirms your number is active, which can lead to more scam messages.
6) Generic language and odd phrasing
Parts of the message feel slightly off. The tone is formal but not quite right. That subtle awkwardness is common in scam messages sent to large groups of people.
7) Overloaded threats designed to scare you
The message piles on consequences like license suspension, added fees, court action and even credit damage. In this case, it even mentions a license suspension and a $160 late payment charge. That combination is meant to overwhelm you and push you to act fast. Real agencies usually provide clear, specific notices, not a long list of escalating threats in a single text.
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Scam texts like this often arrive out of nowhere and try to create urgency before you have time to question them. (Kurt “CyberGuy” Knutsson)
What this means for you
Even if you have never driven in California, you could still receive this message. Scammers cast a wide net and hope someone takes the bait. If you click the link, you could be taken to a fake payment page. That page may ask for your credit card details, personal information or login credentials. In some cases, it can also install malware on your device or redirect you to credential-stealing pages. This isn’t about a ticket. It is about getting your data. State DMVs typically do not send final legal notices or payment demands by text message.
Why these scams keep working
These messages work because they tap into something most people fear. Legal trouble, fines and losing driving privileges. They also look just real enough to pass a quick glance. That is all scammers need. As more services move online, these scams will continue to evolve.
Unlike typical DMV scams, this message impersonates a court and escalates the threats to make the situation feel more serious (Kurt “CyberGuy” Knutsson)
Ways to stay safe from traffic ticket text scams
Start with a simple rule. Never trust a payment request that shows up out of nowhere. Here are practical steps you can take:
1) Do not click the link
If you are unsure, do not tap anything in the message. That includes links and reply options.
2) Use strong antivirus software
If you accidentally click a link, strong antivirus software can help detect malware and protect your data. Get my picks for the best 2026 antivirus protection winners for your Windows, Mac, Android & iOS devices at Cyberguy.com
3) Verify directly with the DMV
Go to your state’s official DMV website by typing it yourself into your browser. Do not use the link in the text.
4) Check the sender carefully
Look at the phone number. International numbers or random strings are a clear warning sign.
5) Ignore generic greetings
Real notices will usually include your name or case details. Vague language is a red flag.
6) Consider a data removal service
Scammers often get your number from data broker sites. Removing your personal info from those databases with a data removal service can reduce these messages. 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
7) Block and report the number
On your phone, block the sender and report it as spam. This helps reduce future attempts.
8) Turn on spam filtering
Enable spam filtering on your phone or through your carrier to catch more of these messages before they reach you.
Kurt’s key takeaways
Todd did the right thing. He paused, questioned the message and did not click. That one decision likely saved him from handing over personal information. When it comes to messages like this, skepticism is your best defense. If something feels off, trust that instinct.
Should phone carriers and tech companies be doing more to block scams like this before you ever see them? Let us know by writing to us at Cyberguy.com
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- Plus, you’ll get instant access to my Ultimate Scam Survival Guide free when you join.
Copyright 2026 CyberGuy.com. All rights reserved.
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