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
Technology
Amazon’s Echo Hub gets a customizable new look and Ring’s AI features
Amazon’s rolling out a free software update for Echo Hub devices that gives the home screen a much-needed update to the interface it launched with in 2024. It had already added Alex Plus AI support, but the new interface has a cleaner, fully customizable layout that fits more smart home info and controls on the screen than the previous version.
The Echo Hub is also getting access to Ring AI’s Video Search feature that lets you use natural language to search through your smart home camera footage, as well as Alexa Plus summaries of detected camera events.
These are the five new features Amazon highlighted for the Echo Hub:
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Read the full story at The Verge.
Technology
Grandparents are identity theft’s biggest payday
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The FBI calls it a “distress scam.” It is also known as a grandparent scam. The scam works by making an older adult believe a grandchild is in serious trouble and needs money right away, often before a court date or legal deadline. Victims reported more than $5 million in losses to this type of fraud in 2025. The FBI’s Internet Crime Complaint Center also noted that reported losses likely show only part of what scammers actually stole.
The Federal Trade Commission found in August 2025 that some of the fastest-growing scams targeting older adults use fear and urgency to override good judgment. A caller may claim your bank account was hacked and say you need to move your money immediately to protect it. However, the money does not move to safety. It goes straight to the scammer.
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AI voice-cloning tools have made these scams even more convincing. Scammers can use a birthday video, voicemail or social media clip to mimic a grandchild’s voice. Then they place the call. The voice sounds familiar, the emergency feels real and the request for bail money seems urgent. The FBI counted $352 million in AI-related scam losses among victims 60 and older this past year.
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Scammers are using stolen personal data, AI voice cloning and urgent phone calls to trick grandparents into sending money. (ljubaphoto/Getty Images)
What makes grandparents worth targeting
The same three pieces of data are required for identity verification at most banks, brokerages, pension recordkeepers, and Medicare: date of birth, last four digits of a Social Security number, and a current mailing address. For most people in their sixties and seventies, all of those accounts are open.
Those three fields have turned up in breach after breach. The Conduent Business Services breach pulled names, SSNs, dates of birth, and home addresses for more than 25 million Americans from systems that process Medicaid records and employer health plans. Texas Attorney General Ken Paxton called it the largest data breach in U.S. history in February 2026.
Americans between 65 and 74 held a median net worth of $409,900 in 2022, according to the Federal Reserve’s Survey of Consumer Finances, more than ten times the median for adults under 35. The FBI found average losses of approximately $38,500 per victim among Americans 60 and older in 2025, nearly double the figure for younger filers.
Why elder fraud losses are often underreported
Older adults reported $2.4 billion in fraud losses to the Federal Trade Commission in 2024. However, the FTC’s December 2025 report to Congress estimated that real losses may have reached $81.5 billion that year. Most cases likely went unreported.
That gap makes identity theft harder to stop. A fraudulent wire from a pension account may never alert a bank. A new credit account opened with stolen information may not reach the victim until it appears on a credit report. By then, weeks may have passed since the application was approved.
Account protections worth setting up
Scammers move fast, so it helps to set up account protections before anything goes wrong. These steps can give banks, brokerage firms and family members more ways to spot trouble early.
1) Add a trusted contact to brokerage accounts
Brokerage accounts have a protection option many account holders never activate: a trusted contact designation. Under FINRA Rule 4512, brokerage firms must ask for a trusted contact when you open or update an account. A trusted contact can be a family member, attorney or accountant. The firm can contact that person if it suspects financial exploitation or cannot reach you. However, that person cannot trade, withdraw funds or view your account balances. FINRA, the SEC and the North American Securities Administrators Association asked investors in August 2025 to contact their firm and add one. You can name more than one trusted contact. You can also change the designation at any time.
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Families can help protect older adults by adding trusted contacts, verifying urgent calls and blocking online Social Security changes. (Kurt “CyberGuy” Knutsson)
2) Ask about holds on suspicious withdrawals
Under FINRA Rule 2165, brokerage firms can place a temporary hold on disbursements when they reasonably believe financial exploitation may be happening. That hold can last up to 55 business days. In January 2026, FINRA proposed extending the window to 145 business days. Ask any firm holding a pension, brokerage or annuity account about its policy on disbursements after an address change.
3) Verify urgent calls before sending money
When a caller claims a grandchild is in trouble or a federal agent needs immediate action, hang up. Then call back using a number you already have, not the number in the message. The FTC found that 41% of older adults who reported losing $10,000 or more to impersonation scams in 2024 said a phone call was the initial point of contact. That makes one simple habit especially important: verify the story before you act.
4) Block online changes to Social Security
Social Security lets you block electronic and automated telephone access to your account record. Once blocked, no one can change your direct deposit information or mailing address online or through the automated phone system. After that, any changes must go through a live SSA representative at 1-800-772-1213 or a field office visit. FINRA also operates a free Securities Helpline for Seniors at 844-574-3577, Monday through Friday, 9 a.m. to 5 p.m. ET.
Identity theft recovery is harder on your own
Even strong account protections may not catch every scam attempt. That is why identity theft monitoring and recovery support can help families respond faster when personal information gets exposed or misused.
Some identity theft protection services monitor dark web marketplaces, data broker sites and people-search sites for exposed Social Security numbers, addresses and other personal information. If fraud happens, recovery support may help contact creditors, file disputes with the three credit bureaus and organize the documentation needed to restore an identity.
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Older Americans remain prime targets for identity theft because scammers can exploit exposed Social Security numbers, birth dates and addresses. (Kurt “CyberGuy” Knutsson)
Some plans also include identity theft insurance for eligible recovery costs, such as lost wages and legal fees.
No service prevents every misuse of an older adult’s identity. However, family monitoring and fraud resolution can shorten the time between when theft happens and when you or someone in your family acts on it.
See my tips and best picks on Best Identity Theft Protection at Cyberguy.com
Kurt’s key takeaways
Grandparents have become a prime target because scammers know where the money is and how to create panic fast. A familiar voice, a stolen Social Security number or a fake emergency can turn one phone call into a devastating loss. The best defense starts before the call comes. Add trusted contacts to financial accounts, block online Social Security changes, verify urgent requests through a number you already know and talk openly with family about scam warning signs. Identity theft protection can also help spot exposed personal information and speed up recovery if fraud happens. No family can stop every scam attempt. However, a simple plan can give older adults more time, more backup and a better chance of keeping their money safe.
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Is enough being done to stop scammers from using AI voices and stolen data to target grandparents? Let us know by writing to us at Cyberguy.com
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Copyright 2026 CyberGuy.com. All rights reserved.
Technology
A warrantless wiretap law is about to expire — but surveillance networks aren’t actually ‘going dark’
Congress has failed to pass a three-week extension of Section 702 of the Foreign Intelligence Surveillance Act (FISA), with the House voting 218-198 against reauthorizing the controversial warrantless wiretapping authority through July 2nd. After a short-term extension earlier this year, the spying program now appears set to lapse for at least a week. This is the nightmare scenario FISA’s proponents have been warning about — but it doesn’t actually mean the US has lost its surveillance capabilities.
Proponents of a clean extension claim a lapse will hinder intelligence agencies’ efforts to thwart potential terrorist attacks, with surveillance networks “going dark”. Sen. Tom Cotton (R-AR) stressed the importance of reauthorizing Section 702 ahead of the World Cup. House Speaker Mike Johnson (R-LA) has said even a brief lapse would be disastrous. “Democrats in the Senate are playing political games right now with the lives of Americans,” he told reporters Wednesday. “It’s a very dangerous situation.”
In March, the FISA court recertified surveillance under Section 702 until 2027. The Brennan Center for Justice notes that a lapse won’t allow telecom companies to flout requests to hand over communications information to the NSA and other spy agencies. In 2008, after Yahoo failed to comply with a Section 702 request during a lapse, the FISA court ruled that the directives issued under Section 702 are effective while the certification is in place — even in the event of a lapse.
“The phrase ‘going dark’ is significantly misleading,” Andrea Sawka Fiegl, the senior policy director for media and technology at Common Cause, said on a Tuesday press call. Fiegl added that companies don’t choose whether they participate in surveillance under Section 702. If they don’t comply after being served with a directive, they face fines starting at $250,000 a day.
“The ‘going dark’ framing is basically a pressure tactic designed to strip Congress of its leverage to negotiate reforms by creating this false binary,” Fiegl said. “There is ample time for Congress to consider and pass reforms.”
Among those reforms are a warrant requirement for queries involving US persons, including so-called “backdoor searches” in which intelligence agencies identify a foreign target with ties to a US person, and then search that person’s communications, thus granting them access to their desired US target. Reformers also want to prohibit intelligence agencies from buying Americans’ data from private brokers to get around warrant requirements.
“Every day that Section 702 is in effect without reforms is a day that Americans’ rights are under threat,” Sen. Ron Wyden (D-OR) said in a statement Wednesday night, after Senate Republicans blocked his request for a five-week extension of Section 702 with new transparency requirements. “If there is going to be an extension of these authorities, there needs to be some guardrails or at least some transparency that would allow Congress and the American people to understand the abuses that have taken place and the need for reforms.”
Though President Donald Trump and Republican leaders in both chambers have called for a clean reauthorization of Section 702, there’s bipartisan appetite for reform — and a handful of Republican holdouts stand in the way of a clean reauthorization. Most Democrats — even some who have supported reauthorization in the past — have objected to a clean extension due to Trump’s appointment of Bill Pulte as acting director of national intelligence.
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