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Tech & the Internet?

What the machines are actually doing, in plain English. 41 questions and counting.

How can you tell if a website is legitimate?The padlock means encrypted, not honest, and scam sites have it too. Check the exact domain spelling, look for a real…
How do you take a screenshot?Windows: press Windows key + Shift + S and drag over what you want. Mac: Command + Shift + 4. Whole screen: Print Screen on…
Is it safe to use public Wi-Fi?Safer than it used to be, because most sites now encrypt traffic with HTTPS. The real risks are fake hotspots and…
Is it bad to charge your phone overnight?No, modern phones stop charging at 100 percent, so overnight is fine. The real enemy is heat and sitting at a full charge…
What does incognito mode actually hide?Incognito only stops your own browser from saving history and cookies. Your internet provider, employer, school, and the…
What is 5G, and is it actually better?5G is the fifth generation of cellular networks, offering faster speeds and lower lag than 4G. The gains are real but…
What are cookies on websites?Cookies are small text files websites store on your device to remember you, keeping you logged in, holding your cart, and…
Do you actually need a VPN?Most people do not. Nearly all web traffic is already encrypted by HTTPS, which addresses the public Wi-Fi threat VPN ads…
What does a VPN actually do?A VPN encrypts your traffic and routes it through another server, hiding activity from your local network and your IP from…
What is AI, in plain English?AI is software that learns patterns from enormous amounts of data instead of following hand-written rules. Chatbots…
What is Bitcoin, actually?Bitcoin is digital money with no bank behind it: a public ledger maintained by thousands of computers, capped at 21 million…
What is phishing, and how do I spot it?Phishing is a fake message impersonating someone you trust to steal passwords or money. The tells: urgency, a request to…
What is the cloud, and where is my stuff?The cloud is other people's computers: your files live in data centers run by Amazon, Google, Microsoft, and Apple, copied…
What is two-factor authentication, and do I need it?Yes, turn it on everywhere important. Two-factor means logging in needs your password plus a second proof, a code or tap, so…
What should you do if your data is in a breach?Change that password and every reuse of it, turn on two-factor authentication, and freeze your credit at all three bureaus…
Why do I need to keep updating my software?Mostly security. Updates patch newly discovered holes that hackers actively exploit, which is why ignoring them is genuinely…
Why does my phone battery die so fast?Usually background apps, screen brightness, and an aging battery. Batteries chemically degrade to about 80 percent capacity…
Why is my computer so slow?Usually too many programs, too little memory, or a full or failing hard drive. The single cheapest fix for an old computer…
Why is my internet so slow?Run a speed test wired and on Wi-Fi. If wired is fast, the problem is your router's placement or age. If both are slow…
How should you actually back up your files?Follow the 3-2-1 rule: three copies, on two different media, with one off-site. Cloud sync is not a backup, because a…
How can you tell if a video or voice is AI-generated?Detection cues are getting less reliable as the technology improves, so verification beats inspection. If a video or call…
How do you get your personal information off the internet?Opt out of data broker sites individually, which is tedious but effective, and use state privacy laws where you have them…
How does Wi-Fi actually work?Radio waves carrying data between your device and a router, on frequencies around 2.4 and 5 gigahertz. The 2.4 band travels…
What is an algorithm?A defined sequence of steps for completing a task, which is a much older and duller idea than the word now suggests. A…
What actually happens when you delete a file?The data usually stays on the drive and only the pointer to it is removed, marking the space as available. That is why…
Do I really need antivirus software anymore?On Windows, the built-in Microsoft Defender is now genuinely good and enough for most people, no paid suite required. Macs…
How do I know if my phone has a virus?True viruses on phones are rare, especially on iPhone. Real signs are pop-up ads, rapid battery drain, unknown apps, and…
How much phone or computer storage do I actually need?For most people, 256GB on a phone is the comfortable sweet spot, and 512GB on a laptop. Photos and video eat the most. Cloud…
Does restarting your phone actually help?Yes. A restart clears memory leaks, stuck processes, and misbehaving apps, which is why it fixes so much. Even the NSA…
Should I use a password manager?Yes. Reused passwords are how accounts actually get hacked, and a manager makes every login unique without your memory…
What does airplane mode actually do?It shuts off your phone's wireless transmitters, cellular, Wi-Fi, Bluetooth, so the phone stops sending and receiving…
What is the difference between RAM and storage?RAM is short-term working memory for what you are using right now; storage is the long-term shelf where everything is kept…
What is the difference between Wi-Fi and the internet?Wi-Fi is the wireless link between your device and your router; the internet is the global network beyond it. Wi-Fi can work…
Which type of two-factor authentication is actually best?Hardware security keys are strongest, authenticator apps are a good default, and SMS codes are the weakest but still far…
Why do phones and computers get slower over time?Mostly because software grows heavier while your hardware stays the same, plus storage filling up and battery aging…
Why does turning it off and on again actually fix things?Restarting clears the device's temporary memory and stops whatever software got stuck in a bad state, giving it a clean…
What is a CAPTCHA, and why are they getting so hard?A test meant to distinguish humans from automated bots. They got harder because AI got better at solving them, and modern…
Why is Bluetooth called Bluetooth?After Harald Bluetooth, a tenth-century Danish king who united Denmark and Norway, chosen as a placeholder by engineers who…
What is a passkey, and is it better than a password?A cryptographic credential stored on your device that replaces the password entirely. It cannot be phished, guessed, or…
Is face or fingerprint unlock safe to use?Yes for most people, and the biometric data stays encrypted on the device rather than being sent anywhere. The real…
What is the difference between HTTP and HTTPS?The S is encryption. HTTPS scrambles traffic between your browser and the site so it cannot be read or altered in transit…