Anthropic just released Claude Fable 5, calling it the most powerful AI model it has ever made widely available and praising its skills in biology, among others. But the model won’t answer basic biology questions — the kind you’d expect a high schooler to handle. Instead, it hands off the query to the former flagship model, Claude Opus 4.8.
Technology
How to free up space on a PC
Using a PC is all fun and games until you run out of storage. We’ve all been there, and the problem becomes more frequent if you’ve been using your PC for years. Over time, the hard disk starts filling up with everything, including PDFs, video files, random screenshots, and duplicate photos transferred from an SD card or your phone.
Once your PC’s storage fills up, it slows down because the resources required to process tasks become limited. I will discuss some proven methods to reclaim valuable space and improve your computer’s performance.
If you’re not a PC user, find more ways to free up space on these devices: iPhone | Android | Mac
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Empty recycle bin
When you delete something on your PC, it remains in the Recycle Bin and still takes up space on your hard disk. The Recycle Bin usually holds deleted files for 30 days, but if you need to free up space right away, emptying it is a good first step. Note that “Recycle Bin” is the term used on Windows. To free up disk space from the Recycle Bin:
- Search for Recycle Bin on your desktop and right-click it.
- Select Empty Recycle Bin.
- Confirm the deletion.
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Step to empty recycle bin on PC. (Kurt “CyberGuy” Knutsson)
BEST ANTIVIRUS FOR PCS & MACS — CYBERGUY PICKS 2025
Delete unnecessary apps
After clearing the Recycle Bin, the next step is to delete unnecessary apps. Unused applications take up valuable storage space and can slow down your system. Removing them will free up space and improve performance on your Windows PC.
- Go to Settings
- Click Apps
- Select Installed apps.
- Sort apps by size to find large ones.
- Click an app and select Uninstall.
Image of Installed apps on a PC. (Kurt “CyberGuy” Knutsson)
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Delete the files you don’t need
Take some time to go through your files and delete anything you no longer need. Old documents, large video files, duplicate photos, and outdated downloads can take up a surprising amount of space. If you are unsure about deleting certain files, move them to an external drive or cloud storage before permanently removing them from your Windows PC.
- Open Settings
- Click System.
- Select Storage.
YOUR IPHONE HAS A HIDDEN FOLDER EATING UP STORAGE SPACE WITHOUT YOU EVEN KNOWING
Steps to delete the files you don’t need on a PC. (Kurt “CyberGuy” Knutsson)
Steps to delete the files you don’t need on a PC. (Kurt “CyberGuy” Knutsson)
- Check the boxes for items like temporary files, downloads and recycle bin.
(Kurt “CyberGuy” Knutsson)
- Click Remove files.
- You can also use Disk Cleanup: Type “Disk Cleanup” in the Start menu, select a drive and choose files to delete.
Enable Storage Sense on Windows
If you’re using Windows, Storage Sense is a built-in feature that can automatically free up space by removing temporary files and old items from the Recycle Bin. How to enable storage sense on Windows:
- Open Settings and go to System > Storage.
- Click on Storage Sense and toggle it On.
- Under the Configure cleanup schedules section, choose how often it should run (every day, week or month). Once enabled, Storage Sense will automatically clean up space based on your preferences.
DOES YOUR WINDOWS 11 PC KEEP RESTARTING? LET’S FIX THAT FRUSTRATING PROBLEM
Transfer files to external storage
- Choose the right external drive: Opt for an external hard drive or solid-state drive (SSD) that suits your needs. SSDs offer faster speeds and better durability, while HDDs provide larger capacities at lower costs.
- Transfer files: Connect your external drive, copy your files to it and verify that all files are successfully transferred.
- Delete original files: After verifying the transfer, delete the original files from your PC to free up space. On Windows, use File Explorer to delete files and empty the Recycle Bin. On Mac, use Finder to move files to Trash and then empty it.
Consider cloud storage
Cloud storage services like Google Drive, Dropbox and Microsoft OneDrive offer convenient, flexible options for storing large files without consuming your laptop’s limited space. These services allow you to securely store your photos, videos and documents in the cloud, freeing up valuable storage on your device. One significant advantage of cloud storage is accessing files from any device with an internet connection, whether on your phone, tablet or another computer.
Most cloud services provide a certain amount of free storage (typically between 2GB and 15GB) before upgrading to a paid plan. For instance, Google Drive offers 15GB of free storage shared across Google services, while Dropbox provides 2GB for free with options to upgrade for more space. OneDrive provides 5GB for free, but Microsoft users can get additional storage through Office 365 subscriptions, granting access to the Microsoft Office suite.
Additionally, cloud storage services come with features like automatic syncing and backup, making it easier to organize and safeguard your files. This can be particularly helpful for large photo and video libraries, which can be set to upload automatically from your phone or computer. With features like file versioning and collaboration tools, cloud platforms offer more than just storage — they enhance productivity and allow seamless file sharing with friends, family or colleagues.
Finally, many cloud storage providers offer encryption and other security measures to protect your files for added peace of mind. However, it would be best always to take extra precautions, such as enabling two-factor authentication and using strong, unique passwords, to ensure your data is safe. Kurt’s favorite cloud services can be seen here.
Protect your data: Essential security steps after managing storage
After you’ve freed up space on your PC-whether by deleting old files, moving data to an external drive or leveraging cloud storage, it’s just as important to make sure your valuable information stays secure. The following steps will help you protect your files and personal data from cyber threats and accidental loss.
1. Use strong passwords: Create unique, complex passwords for all your accounts and devices. Consider using a password manager to generate and store secure passwords. Get more details about my best expert-reviewed Password Managers of 2025 here.
2. Enable encryption: Encrypt your external hard drives and cloud storage accounts to add an extra layer of protection to your data.
3. Implement two-factor authentication (2FA): Enable 2FA on all accounts that offer this feature, especially for cloud storage services.
4. Install and maintain strong antivirus software: Use a strong antivirus program and keep it updated to protect against malware and other security threats. 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 2025 antivirus protection winners for your Windows, Mac, Android and iOS devices.
5. Regularly update your operating system and applications: Keep your devices and software up to date to ensure you have the latest security patches.
6. Be cautious with public Wi-Fi: Avoid accessing sensitive information when connected to public networks, or use a VPN for added security. Using a VPN (Virtual Private Network) service can enhance your privacy by encrypting your internet traffic, making it harder for hackers and third parties to intercept your data, especially on public Wi-Fi. A VPN masks your IP address, helping to obscure your location and online activity. While VPNs don’t directly prevent phishing emails, they reduce the exposure of your browsing habits to trackers that may use this data maliciously. With a VPN, you can securely access your email accounts from anywhere, even in areas with restrictive internet policies. For best VPN software, see my expert review of the best VPNs for browsing the web privately on your Windows, Mac, Android and iOS devices
7. Backup your data regularly: Create multiple backups of your important files, including at least one offline copy.
8. Use secure file transfer methods: When sharing files, use encrypted transfer methods or password-protected links.
By following these steps, you can significantly enhance the security of your data and protect yourself from potential cyber threats.
Kurt’s key takeaway
Your PC’s storage can fill up fast, but you can always free up some space. I personally prefer storing images and videos that take up too much space on an external drive. This way, I can access them whenever I need to while keeping my PC storage free. If an external drive feels like too much of a hassle, you can always opt for cloud storage. Windows supports a range of cloud storage options, including its own services like OneDrive.
What’s the most surprising thing you’ve found taking up space on your computer? Let us know by writing us at Cyberguy.com/Contact
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Copyright 2025 CyberGuy.com. All rights reserved.
Technology
Bluesky is getting ‘communities’
Bluesky will be getting “communities,” which will function as smaller spaces where you can “go deeper and hang out with people who care about the same stuff” sometime this year, according to head of product Alex Benzer. They will be built on the decentralized AT Protocol that underpins Bluesky, with Benzer saying that “it’s a new structure for everyone” that’s part of the “Atmosphere” (a shorthand for the AT Protocol ecosystem).
Benzer listed out a “few ideas we have in mind so far” in a thread. “On Bluesky, you’ll be able to create communities, join them, post in them, and get updates,” Benzer says. “The core features on Bluesky stay simple. The magic comes from communities also existing on the open web. This means you can truly customize them and add features with other Atmospheric apps and tools.”
Communities will get a handle that “doubles as a URL,” and if you go to that URL, you’ll “land on a custom homepage for the community,” according to Benzer. “Builders can also host a completely custom experience there instead.” There will be three privacy levels for communities: public, invite-only, and private. And each community would have its own feed, Benzer says.
Benzer’s thread follows Bluesky COO Rose Wang saying last week that the company wanted to move away from being a “public square” and that it was “very inspired by companies like Reddit.” Meta’s Threads is currently testing a communities feature, while X announced in April that it would be shutting down its own take on communities.
Technology
Do not click fake ‘account recovery’ Amazon email
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Amazon is getting ready for Prime Day, and you can bet scammers are, too. In fact, I received a fake Amazon email that looked like an account recovery warning. It claimed there was unusual activity on my account and pushed me to “Sign In to Verify.”
That kind of message can make anyone uneasy. It certainly did for me. After all, who wants to lose access to an account right before a major sale? Then came the part that really stood out: the email said I might need to upload a document to confirm my account.
That was the giveaway. A real deal can save you money. A fake Amazon email can cost you your login, your payment details and even your identity.
Here’s how this scam works, the red flags that exposed it and the steps you should take before clicking any Amazon account warning.
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A fake Amazon account recovery email is targeting shoppers ahead of Prime Day, using urgency and document requests to steal sensitive information. (Photographer: David Paul Morris/Bloomberg via Getty Images)
Fake Amazon email warning before Prime Day
The timing made this phishing email more convincing. With Prime Day coming up, many people are already watching for Amazon emails. They may be checking delivery updates, deal alerts and order confirmations. That creates the perfect opening for a fake account warning.
The email used the same tricks you see in many phishing scams. It claimed there was account trouble, used urgent language and pushed me toward a sign-in button. That is exactly what scammers want.
Screenshot of scam fake Amazon email (Kurt “CyberGuy” Knutsson)
They want you to react before you inspect the message. They want you to sign in before you think through the request. And in this case, they wanted me to believe a document upload was part of a normal Amazon account check.
Amazon phishing scam red flags
This fake Amazon email had several warning signs. First, it landed in my junk folder. That alone does not prove fraud, but it should make you cautious.
Second, the subject line sounded awkward. It said, “Account Recovery: Sign-in and Verify your Amazon account.” That wording felt stiff and a little off.
Third, the greeting was generic. The email said “Dear Customer” even though it claimed to be about my Amazon account. That alone does not prove the email is fake, but it adds to the concern.
Fourth, the message created urgency. It claimed the account was on hold and that orders or subscriptions had already been canceled.
Fifth, the sender display name said “Amazon,” while the address appeared as account_update@amazon.com. That may look official at first. Still, scammers can spoof sender names or make email addresses look convincing.
Under the yellow “Sign In to Verify” button, the email also says, “Don’t share it with others.” That may sound protective, but in this context, it felt like another attempt to make the fake warning seem official.
The biggest warning sign came from the document request. The email said I would have the option to upload a document with the required information to verify the account.
That should stop you cold. Scammers may be after more than your Amazon password. They may also want your driver’s license, passport, address, phone number or payment details.
Screenshot of fake Amazon email sender address (Kurt “CyberGuy” Knutsson)
Why fake Amazon account emails fool shoppers
This scam works because it hits a very real fear. Most people do not want to lose access to an online shopping account. That concern grows when a big sale is about to start. If you are planning to buy something on Prime Day, an account warning can feel urgent.
The email also borrowed Amazon’s familiar look. It used the Amazon name, a logo area and a yellow sign-in button. It also included a footer that appeared to show an Amazon.com link. That can make the message feel safer than it really is.
Here is the problem. The visible link text in an email can mislead you. A link can appear to point to Amazon while sending you somewhere else. It can also pass through tracking links, redirects or look-alike pages. That is why you should avoid signing in through any account warning email.
120,000 FAKE SITES FUEL AMAZON PRIME DAY SCAMS
Scammers are impersonating Amazon with convincing account alerts designed to capture login credentials, payment details and personal documents. (Photographer: Michael Nagle/Bloomberg via Getty Images)
What happens if you click a fake Amazon link
If you click the link, you may land on a fake Amazon sign-in page. It may look close enough to fool you. Once you enter your email and password, scammers can try to access your real Amazon account. They may check your saved payment methods, shipping addresses and order history.
They may also try that same password on other websites. That becomes a bigger risk if you reuse passwords.
The document request adds another layer of danger. If a fake page asks for your ID, scammers could use that information for identity theft, account takeovers or other fraud. That is why one quick click can turn into a much bigger mess.
Ways to stay safe from fake Amazon emails
A fake Amazon email can look convincing at first, so the best move is to slow down and use these simple checks before you click, sign in or share anything.
1) Do not click the sign-in button
Skip buttons like “Sign In to Verify,” “View details” or “Restore access.” Open the Amazon app or type Amazon.com into your browser yourself.
2) Check Amazon’s Message Center
After signing in directly, go to Your Account > Message Center. If the alert is real, you should see a matching message there.
3) Watch for pressure language
Scammers often say your account is locked, your orders were canceled, or you must act right away. That pressure is designed to make you click before thinking.
4) Never upload ID through an email link
If an email asks for a passport, driver’s license or other document, stop. Contact Amazon through the app or website before sending anything.
5) Use a password manager
A password manager can help you spot fake login pages. If the page is fake, your saved Amazon password usually will not autofill. Check out the best expert-reviewed password managers of 2026 at CyberGuy.com.
6) Turn on two-step verification
7) Use strong antivirus software
Install strong antivirus software on your computer, phone and tablet. Good security software can help detect malicious links, phishing pages, malware and other threats before they do damage. This is especially important if you clicked a suspicious link or downloaded anything from a fake email. Security software should back up your smart habits, not replace them. Get my picks for the best 2026 antivirus protection winners for your Windows, Mac, Android and iOS devices at CyberGuy.com.
8) Use a data removal service
Scammers often build more convincing attacks with information they find about you online. That can include your name, address, phone number, relatives, old usernames and other personal details from people-search sites and data brokers. A data removal service can help remove your personal information from many of those sites. That makes it harder for scammers to personalize phishing emails and identity theft attempts. 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.
9) Report the suspicious email
Forward suspicious Amazon emails to reportascam@amazon.com. Then delete the message from your inbox or junk folder.
JANUARY SCAMS SURGE: WHY FRAUD SPIKES AT THE START OF THE YEAR
Cybersecurity experts warn consumers to avoid clicking links in Amazon account warning emails and verify alerts directly through Amazon. (David Paul Morris/Bloomberg via Getty Images)
Kurt’s key takeaways
Prime Day is a great time to find real deals, but it is also a busy season for fake Amazon emails. Scammers know shoppers are checking delivery updates, watching for discounts and hoping nothing gets in the way of a good buy. That is what made this email so sneaky. It used a familiar fear at the perfect moment: losing access to your account right before a major sale. The safest move is to slow down before you click. Do not trust the button. Do not trust the sender name alone. Open the Amazon app or type Amazon.com into your browser and check your account yourself.
Have you ever received an email that looked official enough to make you click, and what finally made you stop? Let us know by writing to us at CyberGuy.com.
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HOW TO DETECT FAKE AMAZON EMAILS AND AVOID IMPERSONATION SCAMS
Copyright 2026 CyberGuy.com. All rights reserved.
Technology
Claude Fable is too scared to teach you about the powerhouse of the cell
It isn’t because Fable doesn’t know the answers. It’s because Anthropic won’t let it, by design.
Fable is a public-facing, Mythos-class model, a family so capable at cybersecurity tasks Anthropic said it was too dangerous to release publicly. But while Anthropic has spent much of the extended Mythos rollout warning about cybersecurity, it is biology where Fable’s guardrails are the most obvious — and most limiting.
When I tried the model, it refused to answer a range of basic biology questions, many that felt about as far away from any plausible safety risk as any question could be. It would not respond to “tell me about cell membranes” or answer “what are mitochondria,” that famous powerhouse of the cell. It refused to explain “what is a prion,” the proteinaceous particles behind mad cow disease, or “how mRNA vaccines work.”
“We made this tradeoff so customers could benefit from the model’s capabilities sooner without the risks.”
The restrictions applied to ordinary and objectively rather harmless medical queries too. Fable would not answer “what causes hay fever,” explain how asthma medicine works, explain how antibiotic resistance arises, or tell me what Ebola is and how it spreads. Some of my basic queries occasionally got through, with Fable answering questions like “what is cancer” and “what is DNA.” When Fable refused, Opus 4.8 generally answered perfectly well.
Anthropic says the broad biology filters are an intentional choice and are deliberately conservative, with bioweapons the primary concern. “With the launch of Claude Fable 5, our first Mythos-class model, we believe models now have a greater ability to accomplish real-world scientific tasks and for malicious actors to potentially use our models for highly risky biological research,” spokesperson Paruul Maheshwary told The Verge. “We have always used classifiers to block our models from helping with bioweapons-related requests. To deploy Fable 5 safely, we believe it was necessary to be overly conservative with our safeguards so they block most queries tied to biology work.”
Anthropic has previously highlighted four key areas where it would throttle Fable’s responses for safety: chemistry, biology, cybersecurity, and distillation, a technique for training smaller AIs using the outputs of larger ones. The company has accused Chinese rivals like DeepSeek of using distillation on its models on an “industrial” scale.
While I could not meaningfully test distillation, Fable seemed more willing to answer questions about chemistry and cybersecurity. For example, it gave a basic overview of the explosive TNT, though withheld synthesis instructions “for obvious reasons.” It readily answered questions on the use of chlorine gas as a chemical weapon, common password threats, and nuclear fusion and fission, as well as explaining how to secure an iPhone from hackers. It still limits: Fable deferred to Opus when I asked it about sarin gas, a highly toxic nerve agent. Fable and Opus both refused the prompt “how to make anthrax,” and Claude paused the chat entirely. That made sense. The mitochondria prompt refusal seems like a false positive.
“We made this tradeoff so customers could benefit from the model’s capabilities sooner without the risks,” Maheshwary explained, adding that Anthropic is working hard to improve its detection and reduce the false positives. “We intend to make Mythos-class models available without these safeguards to the broader biology and life sciences community so these capabilities can be used to accelerate biomedical research and drug discovery.”
Anthropic did not answer questions about whether this kind of restricted release will become the new norm for future models.
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