Viruses, Malware and Hackers: A Plain-English Guide for Families
What viruses, malware, phishing and hackers actually are, how families get hit, the built-in protection you already have, and what to do if a device is infected.
"Virus" has become the catch-all word for anything bad that happens to a computer. In reality, the threats families face today are a little different from the classic viruses of the past, and the protections are better than they used to be. Understanding the basics makes it much easier to keep your devices, and your kids' accounts, safe.
The terms, decoded
You do not need to be a security expert, but a few definitions help.
| Term | What it means |
|---|---|
| Malware | Any software designed to harm a device or steal from its owner. Viruses, spyware and ransomware are all types of malware. |
| Virus | Malware that spreads by attaching itself to files or programs. Less common today than other types. |
| Spyware | Software that secretly watches what you do, records passwords or tracks location. |
| Ransomware | Malware that locks your files and demands payment to unlock them. |
| Phishing | Fake messages or websites that trick you into handing over passwords, codes or payment details. |
| Account takeover | When someone logs into your account, usually with a stolen or reused password. |
For most families, phishing and account takeovers are far more likely than a traditional virus. A stolen game or social media account is the most common "hack" kids experience.
How families usually get hit
Attackers go where people are careless or curious. The most common routes are:
- Free stuff downloads. Game cheats, mods, cracked apps, "free Robux" or V-Bucks generators, and pirated movies are classic carriers of malware.
- Fake login pages. A message says your account is locked or you won a prize, and the link leads to a convincing copy of a real sign-in page.
- Reused passwords. If one website leaks your password, attackers try it everywhere else.
- Unpatched devices. Old operating systems and apps with known security holes.
- Scam pop-ups. Browser warnings that claim your device is infected and tell you to call a number or install a "cleaner." The warning itself is the scam.
- Shared codes. Someone posing as support or a friend asks for the verification code that was just texted to you. That code is the key to your account.
The protection you already have
The good news is that modern devices come with strong built-in defenses. The trick is keeping them switched on and up to date.
Windows
Windows 11 includes Windows Security (Microsoft Defender), which provides antivirus and firewall protection at no extra cost. Open the Windows Security app to confirm virus and threat protection is on. Windows 10 no longer receives regular updates, so a PC still running it should be upgraded, enrolled in Microsoft's paid or extended security update program while that lasts, or replaced.
Mac
macOS checks downloaded apps and includes built-in malware protection that updates automatically. Leave the default setting that only allows apps from the App Store and identified developers.
iPhone and iPad
Apps are reviewed and kept isolated from each other, which makes traditional viruses rare. Watch instead for phishing links, scam calendar invitations, and requests to install "profiles" from websites. A real app or service almost never needs you to install a profile.
Android
Google Play Protect scans apps on the device. The biggest risk on Android is installing apps from outside the Play Store. On a child's phone, keep that option off and use Google Family Link to approve new apps.
Ten habits that prevent most problems
- Turn on automatic updates for every device, browser and app.
- Use unique passwords with a password manager, or passkeys where available.
- Turn on two-step verification for email, Apple, Google, Microsoft, gaming and social accounts.
- Never share a verification code with anyone. Legitimate companies will not ask for it.
- Download only from official app stores and well-known company websites.
- Skip cheats, mods and "free currency" offers. If a game wanted you to have it free, it would be in the game.
- Go to sites directly instead of clicking links in unexpected emails, texts or direct messages.
- Close scary pop-ups instead of calling the number. Restart the browser if needed.
- Use a standard (non-admin) account for kids on family computers, so they cannot install software without a parent.
- Back up regularly. Automatic cloud or external-drive backups make ransomware and lost devices far less painful.
Parental controls help with several of these. Requiring approval for new apps and limiting downloads stops a lot of malware before it arrives. Our overview of parental control tools that cover every device in your home is a good place to start.
Signs something is wrong
Not every slow computer is infected, but watch for:
- New toolbars, extensions or home pages you did not add
- Pop-ups appearing even when the browser is closed
- Friends receiving messages or posts from your account that you did not send
- Password reset emails you did not request
- A device suddenly running hot, slow or out of storage for no reason
- Unknown apps on a phone, or a profile you do not recognize under VPN and Device Management settings on iPhone
What to do if you think you have been hacked
- Disconnect the affected computer from Wi-Fi if you suspect malware.
- Change passwords for affected accounts from a different, trusted device, starting with email.
- Turn on two-step verification if it was not already on, and sign out of all other sessions.
- Run a full scan with Windows Security or your built-in protection.
- Remove unfamiliar apps, extensions and profiles.
- Check account recovery details to make sure the attacker did not change them.
- Contact your bank if any payment information may have been exposed.
- Use the platform's official recovery process for locked accounts. For example, our guide to protecting your Facebook account from hackers covers recovery for that platform.
If a computer keeps misbehaving after these steps, backing up your personal files and resetting the device to factory settings is often the cleanest fix.
Talking with kids about it
Kids are often the target because they are eager for free game items and less suspicious of friendly messages. A few simple rules help:
- "If something is free and seems too good to be true, ask me first."
- "Nobody real will ever ask for your password or a code we got by text."
- "If a pop-up says your device is infected, close it and come get me."
- "If you think you clicked something bad, tell me right away. You won't be in trouble."
Quick security checklist
- Automatic updates on for every device
- Built-in protection (Windows Security, Play Protect) turned on
- Unique passwords and two-step verification on key accounts
- Apps installed only from official stores, with parent approval for kids
- Regular automatic backups
- A family rule: no cheats, no cracks, no sharing codes
Frequently asked questions
Do I need to buy antivirus software?
For most families, no. Windows includes Microsoft Defender, Macs have built-in malware protection, and iPhones and Android phones restrict where apps come from. Keeping devices updated matters more than adding paid software.
Can iPhones get viruses?
Traditional viruses are rare on iPhone because apps are reviewed and isolated from each other. The bigger risks are phishing links, fake login pages, malicious configuration profiles and scam apps.
How do kids usually get malware?
Most often through free downloads: game cheats, mods, cracked software, fake app stores and links promising free in-game currency.