How To Tell If Your Wi-Fi Is Hacked (And How To Fix It)

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J.R. Tietsort

Chief Information Security Officer at Aura

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    Can Your Wi-Fi Get Hacked?

    Whether you’re working remotely from a coffee shop, checking email from an airport lounge, or streaming Netflix from home - your Wi-Fi connection (yes, even your home network) may be vulnerable to attacks from cybercriminals. 

    Hackers can hack your router, spy on your Wi-Fi connection and even eavesdrop on your conversations to steal personal information such as credit card details, passwords to your social media accounts, and even compromise your online banking apps.

    While Wi-Fi hacking isn’t as common as ransomware or other types of social engineering attacks, it’s still a significant threat.

    For example, a hacker exploited an unprotected router to steal the data of 50 million T-Mobile customers. It’s not just multinational corporations that are at risk of router hacking; consumers are at risk, too. 

    Because working from home increased during the coronavirus pandemic, hackers are increasingly targeting home Wi-Fi networks. Millions of households are still using outdated and unpatched routers.  

    Unfortunately, the average person is not familiar enough with this problem, nor are they aware of the solutions available to protect their home Wi-Fi from being hacked.

    How Can My Home Wi-Fi Be Hacked?

    • Brute-force hacking your Wi-Fi password: Hackers can try hundreds of different password combinations to gain access to your router’s internal settings. If your Wi-Fi password is cracked, hackers will change the password and lock you out of your home Wi-Fi.
    • Using the manufacturer’s default password: Wi-Fi hackers will use the manufacturer’s default admin password to gain access to your router and change its settings. That’s why you should always change your router’s default password. You should also create a unique SSID (wireless network name). Never use the default SSID.
    • Exploiting an unpatched firmware vulnerability: Cybercriminals can exploit an unpatched firmware vulnerability to access the router’s internal settings. If your home has an internet connection, it’s vulnerable to being hacked by a skilled cybercriminal, regardless of whether you’re using a firewall or not.
    • DNS hijacking: Cybercriminals can also trick you into visiting malicious sites using an emerging cyber threat. For instance, a hacker can conduct a DNS hijacking attack by breaking into your router and changing the DNS settings so that it redirects your traffic to harmful phishing websites.

    Related: How To Tell If An Email Is From a Scammer [With Examples]

    The Truth About Home Wi-Fi Router Vulnerability

    Here's a disturbing example of what happened to a mother in the UK. Her two year old son was experiencing sleep issues for weeks. Turns out, a creepy man hacked the baby monitor and was shushing the baby in the middle of the night. 

    Any product connected to the internet without proper security can be hacked, including a baby monitor. That’s why you should never use the default Wi-Fi router settings, and consider securing your home Wi-Fi network in order to mask your online footprint and minimize the risk of exposure to hackers.

    Cybercriminals have proven they can and will exploit unpatched routers with outdated router firmware to commit criminal acts. Unfortunately, many vendors aren’t prepared for this reality. 

    The Fraunhofer Institute tested 127 home routers from manufacturers including AVM, ASUS, Netgear, D-Link, Linksys, TP-Link, and Zyxel and found that almost all had security flaws—some of them severe—ranging from missing security updates to easily decryptable passwords and unpatched vulnerabilities that could be exploited. 

    There are many recent incidents instances cyber attackers exploiting Wi-Fi router vulnerabilities, including: 

    • Exploiting TP-Link Routers. Since 2016, cybercriminals have exploited an unpatched vulnerability to hijack TP-Link 4G-capable routers.
    • Exploiting Tenda Routers. Cyber attackers used zero-day vulnerabilities to install malware on Tenda routers and built an IoT botnet to perform DDoS attacks. 
    • Hijacking Linksys Routers. Hackers hijacked victims’ Linksys routers and redirected their traffic to malware sites when users were trying to access popular sites like Amazon and Disney. 

    Can Someone Hack Your Phone Through Wi-Fi?

    Unfortunately yes, your phone can be hacked via Wi-Fi. 

    Hackers know how to hack into your phone (especially over public Wi-Fi networks) like any other physical device, regardless of whether you’re using an iPhone or an Android phone. 

    During a man-in-the-middle attack, a hacker can eavesdrop on communications between the phone and a Wi-Fi network to collect personal information submitted from the phone.

    Related: How To Know if Your Phone Is Hacked (and What To Do)

    What Can Someone Access If They Hack Your Wi-Fi? 

    If someone hacks your Wi-Fi, they can monitor all of your unencrypted traffic. That means they can spy on data sent across your network from all of your devices, including personal information like your name, address, and even financial account details. 

    In other words, they have all the information necessary to steal your identity and commit fraud.

    At the same time, they can also download harmful videos and files to your network, infect devices with malware or ransomware like VPNFilter or SwitcherTrojan, and commit further cyber attacks — like DDoS attacks

    📚 Related: Was Your IP Address Hacked? Here's How To Tell (and What To Do!) →

    Here’s How To Know If Your Wi-Fi Is Hacked

    • Slow internet speed: If you notice your internet is much slower than usual this may indicate that there is an unauthorized intruder with access to your network. The more people using your network, the more internet bandwidth is consumed and less bandwidth is available to browse online, use applications and services, or watch videos. 
    • Unfamiliar devices or IP addresses detected: Attackers may try to connect to your network with unfamiliar devices. If you think someone is snooping on your activity, you can log in to your router’s IP address in your web browser and look at the list of connected devices.
    • Wi-Fi password changed: Cyber attackers will change your login credentials shortly after breaking into your router to stop you from changing the settings and protecting yourself. If you can’t log in with your own credentials, this indicates that your Wi-Fi router has likely been hacked.
    • Unusual software on your devices: If you notice software or applications installed on your devices that you didn’t authorize, this can be another telltale sign that a cyber attacker has taken control of your Wi-Fi network. 

    Related: Have I Been Hacked? How To Recognize & Recover From a Hack

    What To Do If Your Wi-Fi Was Hacked

    • Factory reset your router: If you believe your router has been compromised, perform a hard factory reset to return the router to its out-of-the-box factory settings. (Note that this is different from using the normal reset button). A factory reset can help remove certain strains of malware and ransomware and reset all existing configurations (including any malicious changes).
    • Change your Wi-Fi network password: The next thing you should do is change your admin password (and SSID). Changing your network admin password will mean that a hacker won’t be able to use your old credentials to log in again, and it will stop them from eavesdropping or changing your router settings. Avoid weak passwords that hackers can guess, like password or password123.
    • Disable remote administration: If you haven’t already deactivated remote administration on your router, then you might notice that the hacker has gained access to your computer, especially if they’re moving your cursor around or installing unknown programs. You can counter this by turning off remote administration through the router’s online interface.
    • Scan devices for malware: After breaching a network, attackers will often attempt to install malware on devices. It’s a good idea to scan your devices for malware so that you can remove any malicious content they’ve left behind.
    • Consider Identity Theft Monitoring: If you’re certain that your online privacy has been violated, consider an identity theft monitoring solution that includes data breach monitoring and credit monitoring. This way, if a criminal attempts to use your personal information to commit identity theft, or if your sensitive data is found on the Dark Web, you'll be alerted and given the chance to act fast, before irreparable damage is done.

    💡 Related: How Hackers Get Into Your Computer (And How To Stop Them) →

    How To Prevent Wi-Fi Hacking

    1. Change your router's admin credentials: If you get a new router, you should always change the network name (SSID) and password that came with it. This prevents an attacker from looking up the default admin password and SSID. When changing the password, select a strong password with a mixture of uppercase and lowercase letters, numbers, and symbols. 
    2. Update your router’s firmware: Routers have vulnerabilities that attackers can exploit if they’re not patched. Installing firmware updates will ensure that there are no vulnerabilities that attackers can capitalize upon to break into the device and eavesdrop on your activity.
    3. Deactivate remote administration: Many routers come with a remote administration feature, allowing access to the router’s admin settings through a web browser. Out of an abundance of caution, it’s a good idea to deactivate this setting, as it will prevent hackers from exploiting an unsecured connection to your router.
    4. Protect your network with a secure VPN: Another simple way to protect your information from attackers is to use a VPN to encrypt your traffic.
    5. Disable your router’s WPS setting: Hackers often scan local areas for networks that support WPS. They will attempt to audit them with a tool called Airgeddon, as these networks can be hacked with brute-force PIN attempts and pixie-based attacks that enable them to get your WPS pin and recover your router password. Disabling the WPS setting prevents these attacks.
    6. Enable WPA2 encryption: If your router has Wi-Fi Protected Access (WPA) security protocol, such as WPA2, you can use this setting to encrypt your activity with AES encrypting. WPA2 encryption is always preferred against WEP encryption. An extra layer of protection in addition to WPA2 encryption is MAC address filtering, a practice by which your router is configured only to allow a pre-approved list of devices join the Wi-Fi network.
    7. Use ethernet instead of Wi-Fi: By default, an ethernet (wired) connection is more secure than Wi-Fi, because it does not transmit data through the air, leaving it more susceptible to interceptions. However, an ethernet connection is not the most convenient option, so it's not realistic to rely solely on a wired connection to protect your Wi-Fi against hackers.
    8. Use antivirus software: Installing antivirus software on your devices is crucial. Even if an attacker breaches your router, they won’t be able to deploy malware or viruses to your devices.

    Take Action: Protect Your Online Privacy

    Your personal data is like currency to cyber attackers. Don’t think that just because your router is in your living room it’s beyond the reach of a sophisticated hacker.

    Monitoring your network activity and taking the time to properly configure your router and Wi-Fi security with the strongest security settings will reduce the risk of a cybercriminal being able to breach your defenses and steal your personal information. 

    Ready for ironclad Wi-Fi protection? Try Aura free for 14 days.

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    1. Financial identity theft and fraud
    2. Medical identity theft
    3. Child identity theft
    4. Elder fraud and estate identity theft
    5. “Friendly” or familial identity theft
    6. Employment identity theft
    7. Criminal identity theft
    8. Tax identity theft
    9. Unemployment and government benefits identity theft
    10. Synthetic identity theft
    11. Identity cloning
    12. Account takeovers (social media, email, etc.)
    13. Social Security number identity theft
    14. Biometric ID theft
    15. Crypto account takeovers