Can an IP address be hacked?

How hackers use IP addresses to attack networks

Hackers may use your IP address to probe your internet-facing services (such as websites or cloud services) and look for vulnerabilities — all for a shot at accessing your personal information. These scenarios are only part of what someone can do with your IP address. Hackers may also exploit your IP to:

• Estimate your device’s approximate location (using IP geolocation databases).
• Get your IP blocklisted (for example, by abusing services using your IP or reporting it to third parties).
• Launch targeted cyberattacks based on your approximate location data (for example, phishing attacks).
• Launch DDoS attacks.

It’s important to note that malicious actors can use various techniques for the above-mentioned exploits, even without knowing your IP address. However, knowing your IP address makes executing their attacks easier.

Why is your IP safety important?

While an exposed IP address may seem like no big deal, it allows hackers to probe your devices from outside, potentially scouting for vulnerabilities and other entry points.

Here’s what hackers find out when they learn your IP address:

• The country, state, and city you’re in.
• Your internet service provider (ISP).
• Your approximate location (usually city-level).

In addition to that information, attackers may probe open ports exposed on your public IP to find weak points in your network. While an IP address is not enough to hijack online gadgets (such as Wi-Fi routers, IoT devices, or private home servers), it can provide the starting points for attacks on your network.

The risks of “IP hacking” for your privacy and security

The main risk of so-called “IP hacking” is the exposure of network vulnerabilities that can lead to more serious cyberattacks. Since attackers constantly scan millions of IPs (usually via automation), it’s worth investing in basic cybersecurity measures. Knowing the most common threats will help you secure the devices and services behind your IP address.

Threats to your personal information and devices

An exposed IP address may pose threats to your personal information and devices, including:

• DDoS attacks. Malicious actors can use your IP to flood your router, overloading it and causing crashes.
• Partial network compromise (via vulnerabilities or misconfigurations). If vulnerable devices or software are exposed on your IP, attackers might exploit them to gain unauthorized access.
• Network vulnerability scanning. Attackers can scan your IP address for open ports and unsecured services that might provide entry points into your network.

Can someone hack your Wi-Fi using your IP?

Your IP address alone is not enough for hackers to take over your Wi-Fi. For someone to take control of your Wi-Fi router, it would require your device to have some critical configuration errors or bugs. While having your IP address may, in theory, help malicious actors find those vulnerabilities, IP alone is not enough to fully hijack your router.

Common signs your network might be compromised

A compromised network shows clear, distinct signs of unauthorized access. While knowing your IP address can help hackers target you, usually a compromised network is a result of phishing attacks or other cyber threats. The common signs of a compromised network may include: 

• Unusually slow internet connection. This may occur because of malware or unauthorized users consuming bandwidth. If your device or router is exposed, attackers might also attempt DDoS attacks that may slow your connection.
• Unexpected pop-ups and advertisements. Typically, a result of malware downloads or clicking malicious links. Can also be a sign of adware or browser hijacking.
• Unfamiliar programs running. If you see unknown processes or applications on your device, it could be a sign of malware in your network.
• Increased data usage. Unexplained spikes in your internet consumption often suggest there is some unknown (possibly malicious) software running in the background.
• Frequent system crashes or freezes. Malicious software can cause system instability, resulting in app crashes, frozen screens, and error messages. 
• Changed browser settings. Home page, search engine, or bookmarks altered without your authorization are signs of potential malicious activity on your device.
• Suspicious network activity. If you see unknown devices appear on your network, treat them as a sign of network compromise.
• Blocked access to security websites. Once in your system, hackers may use malware to prevent you from reaching antivirus or security sites.
• Unauthorized account access notifications. Alerts about logins from unfamiliar locations are a red flag indicating potential network compromise.
• Strange emails sent from your accounts. If you get messages from friends reporting spam or phishing emails from you, that may mean your accounts or network have been compromised.

How to protect your IP, Wi-Fi, and devices from hackers

Protecting your IP address, Wi-Fi, and other devices from malicious actors requires some effort. However, it’s not a daunting task if you know what to do. To safeguard your IP address and devices from hackers, consider taking these measures:

• Regularly update security software.
• Use strong passwords.
• Use additional security measures (such as a VPN and a firewall).

If you suspect your IP address has been compromised, consider taking these actions immediately:

• Restart your router. Most ISPs assign dynamic public IP addresses when the router restarts. Depending on your provider, restarting the router may change your router’s IP address, preventing malicious actors from monitoring your network activity. 
• Change passwords. If your device is password-protected, consider changing the router admin password, device account passwords, and online account passwords to avoid hijacking or exposure.
• Check for malware. Run a device scan and remove any suspicious-looking files.
• Contact your ISP. Your ISP can provide additional information on how to safeguard your network from potential malicious activity and may assign you a new IP address.
• Monitor device activity. Check your network and device activity for any suspicious apps, connection slowdowns, or increased resource usage. These could signify potential malware. 

Use a virtual private network (VPN) to change and protect your IP address

While changing your IP address is something that only your ISP can do, you can still safeguard your IP address by using a VPN. A VPN will route your internet connection through a secure remote server instead of your ISP’s server, which means that websites, apps, and potential snoopers will see the VPN server’s IP address instead of your public IP address when you’re browsing online. 

Setting up a VPN also provides additional security features. Products such as NordVPN offer benefits like Threat Protection Pro™ — an advanced cybersecurity tool that blocks malicious links and downloads before they can do damage to your systems. You can set up a VPN on your router as well as other devices, including your mobile phone and smart TV.

Set up stronger Wi-Fi security

When it comes to your home Wi-Fi security, tinkering with your Wi-Fi’s settings is a worthwhile investment. Fortifying your router’s firewall and security settings may help you improve your router’s security and safeguard your online presence. However, make sure you know what you’re doing — review your router manufacturer’s instructions to configure it safely.

Regularly check for network intrusions

Running occasional system scans and monitoring your network logs is another way to reduce the risk of a cyberattack. When you form a habit of regularly checking your network for intrusions, you will be able to notice suspicious activity before malicious actors can exploit your systems and cause damage.