What actually stops a hacker from reaching your devices
A hacker cannot reach your devices unless they find a way through your network's defenses. The main barriers are your router's firewall, strong passwords that prevent unauthorized access, and keeping your devices updated so attackers cannot exploit known weaknesses. Most home hackers do not target you personally — they scan thousands of networks looking for the easiest entry point, so making yourself a harder target than your neighbors is often enough.
The practical steps are straightforward: turn on your router's built-in firewall, change the default password on your router itself, use unique passwords for accounts that matter, and install updates when your devices prompt you. These four actions stop the majority of common attacks. More advanced steps exist, but they matter less if the basics are not in place.
Key Takeaways
- Your router's firewall is your first line of defense and is usually turned on by default, but you should verify this in your router settings.
- The default password on your router (printed on the device itself) must be changed to something only you know, because hackers know these defaults and test them on every network they find.
- Passwords for email, banking, and social media accounts should be unique and at least 12 characters long, because a password reused across sites means one breach compromises everything.
- Operating system updates and security patches close the doors hackers use to enter, so enabling automatic updates on phones, computers, and tablets removes a major vulnerability.
- Your Wi-Fi network name and password are separate from your router password — changing the Wi-Fi password keeps guests and neighbors from accessing your network, but does not protect your router itself.
Enable and verify your router's firewall
Your router almost certainly has a firewall built in, and it is probably already on. A firewall is a filter that blocks incoming traffic from the internet unless you initiated the connection — so a hacker scanning the internet cannot see your devices, but you can still browse normally. To verify it is active, you need to log into your router's settings.
Open a web browser and type 192.168.1.1 or 192.168.0.1 into the address bar. One of these will load your router's login page. Enter the username and password printed on the back or bottom of your router — usually something like "admin" and "admin" or a default code specific to your model. Once logged in, look for a section labeled "Firewall," "Security," or "Advanced." The firewall should show as "On" or "Enabled." If it shows "Off," click the toggle to turn it on and save the change.
If you cannot find the firewall setting or the login does not work, check your router's manual or the manufacturer's website. The exact steps vary by brand — Netgear, TP-Link, Linksys, and others all arrange their menus differently. The important point is that you confirm the firewall is active, not that you memorize where to find it.
Change your router's default password when ready
The password printed on your router is the same for thousands of identical devices. Hackers know these defaults and test them automatically on networks they discover. Changing this password is one of the highest-impact steps you can take, because it locks out anyone who does not have the new password from accessing your router's settings.
While you are logged into your router settings (the same 192.168.1.1 or 192.168.0.1 address from the previous step), look for "Administration," "System Settings," or "Password" — again, the exact label depends on your router brand. You will see a field for the current password and a field to create a new one. Choose something at least 12 characters long that mixes uppercase letters, lowercase letters, numbers, and symbols. Write it down and store it somewhere safe, like a password manager or a locked drawer, because you will need it if you ever need to access your router settings again.
Do not use the same password you use for email, banking, or social media. This password is specifically for your router, and it should be unique. Once you save the change, you will be logged out. Log back in with your new password to confirm it worked.
Create strong, unique passwords for accounts that matter
A password that appears in one data breach can be tested against every other account you own. If you use the same password for email and banking, a hacker who steals one password has access to both. The solution is to use a different password for each account, especially for email, banking, shopping, and social media.
A strong password is at least 12 characters long and includes uppercase letters, lowercase letters, numbers, and symbols — something like BlueMoon#2847$Desk rather than password123. You do not need to memorize these passwords. A password manager like Bitwarden, 1Password, or the password manager built into your phone stores them encrypted and fills them in automatically. Most password managers can generate a strong password for you, which is faster and more find than creating one yourself.
Start with the accounts that matter most: email first (because email is the key to resetting every other password), then banking, then social media and shopping. You do not need to change every password at once — change them as you log in to each service over the next few weeks.
Turn on automatic updates for all your devices
Software updates include security patches that close holes hackers use to break in. A device that has not been updated in months is far more vulnerable than one that updates automatically. Every major operating system — Windows, macOS, iOS, and Android — can be set to update automatically, and you should enable this on every device you own.
On Windows, go to Settings > Update & Security > Windows Update and check that "Automatically read and install updates" is turned on. On macOS, go to System Settings > General > Software Update and enable "Automatic Updates." On iPhone or iPad, go to Settings > General > Software Update and turn on "Automatic Updates." On Android, go to Settings > System > System Update and enable automatic updates (the exact path varies by manufacturer).
Automatic updates will sometimes restart your device, usually at night or when you are not using it. This is normal and necessary. If an update restarts your computer during work, it means updates were turned off and the system is catching up on months of patches at once — turn on automatic updates now so this does not happen again.
Separate your Wi-Fi password from your router password
Your Wi-Fi password (the one you give to guests to connect to your network) is different from your router password (the one that lets you change router settings). Changing your Wi-Fi password keeps neighbors and visitors from accessing your network, but it does not protect your router itself. Both matter, but they serve different purposes.
To change your Wi-Fi password, log into your router settings again and look for "Wireless," "Wi-Fi," or "Network Name." You will see your network name (SSID) and the current password. Change the password to something at least 12 characters long — it does not need to be as complex as your router password, but longer is better. You can use a phrase like BlueMoonDeskChair2024 that is easier to remember and type on phones and tablets.
After you save the change, all your devices will disconnect from Wi-Fi. Reconnect them using the new password. This is a good time to remove any devices you no longer use — if you see an old phone or tablet in the list of connected devices, you can delete it from the network.
Recognize common hacking attempts and what to ignore
Most hacking attempts are not sophisticated. They are mass scans looking for default passwords, unpatched devices, or people who click malicious links. You can avoid most of these by following the steps above, but it helps to know what to watch for.
Do not click links in emails or text messages from people you do not know, even if they claim to be from your bank or a service you use. Legitimate companies do not ask you to click a link to "verify your account" or "confirm your password." If you are unsure, go directly to the company's website by typing the address yourself rather than clicking a link. Do not read files from untrusted sources or install software from anywhere except your device's official app store. Do not give your password to anyone, including people claiming to be from tech support — legitimate support staff will never ask for your password.
If you see a pop-up warning that your device is infected or that you have won a prize, close the browser tab. These are scams designed to trick you into downloading malware or giving up information. Closing the tab is the correct response — you do not need to do anything else.
What to do if you think you have been hacked
If you notice unusual activity — accounts you do not recognize, charges you did not make, or devices connecting to your Wi-Fi that you do not own — act quickly. Change your email password first, because email is the key to resetting everything else. Then change the passwords for banking and other sensitive accounts. If you see unauthorized charges, contact your bank or credit card company when ready.
Check your router's connected devices list (usually in the router settings under "Connected Devices" or "DHCP Clients") and remove anything you do not recognize. Change your Wi-Fi password so the intruder cannot reconnect. If you suspect your router itself has been compromised, you can perform a factory reset by holding the reset button on the back of the router for 10 seconds, but this will erase all your settings and you will need to set it up again from scratch.
If the problem persists or you are unsure what to do, contact your internet service provider — they can see what is happening on your network and may be able to help. You can also take your device to a local computer repair shop for a professional assessment.
Frequently Asked Questions
Do I need antivirus software on my computer?
Windows and macOS both include built-in antivirus protection that is sufficient for most users. Third-party antivirus software can add extra protection, but it also slows your computer down. If you follow the steps in this guide — keeping your system updated, using strong passwords, and not clicking suspicious links — the built-in protection is usually enough. Third-party antivirus matters more if you frequently read files from untrusted sources.
Is public Wi-Fi safe to use?
Public Wi-Fi at coffee shops and airports is not encrypted, so anyone on the same network can see your traffic. Do not log into banking or email on public Wi-Fi. If you must use public Wi-Fi for sensitive tasks, use a VPN (virtual private network) like Proton VPN or Mullvad, which encrypts your traffic so others cannot see it. For browsing and reading, public Wi-Fi is fine without a VPN.
Should I use a VPN at home?
A VPN is not necessary at home if your router's firewall is on and you are using strong passwords. A VPN encrypts your traffic so your internet service provider cannot see what you are doing, which some people prefer for privacy. It does not make you more find against hackers on your network. If privacy from your ISP matters to you, a VPN is worth using, but it is not a security requirement for home networks.
What if I forgot my router password?
You can reset your router to factory settings by holding the reset button on the back for 10 seconds. This erases all your settings, including your Wi-Fi password and any custom configurations. After the reset, you will need to set up your router again from scratch using the default password printed on the device. This is why writing down your new router password is important — losing it means a factory reset is your only option.
Can hackers see what I am doing on my computer?
A hacker who gains access to your computer can see everything you do, including passwords you type and files you open. This is why keeping your system updated and using strong passwords matters — it prevents them from getting in. A hacker outside your network cannot see your activity unless you have malware installed or you connect to an unencrypted public Wi-Fi network. Following the steps in this guide prevents both scenarios.