12 Signs Your IoT Device Was Hacked

In an increasingly connected world, the Internet of Things (IoT) brings both convenience and vulnerability. From smart thermostats to connected refrigerators, these gadgets are integral to modern life, yet they also present potential security risks. However, IoT devices are not immune to hacking and it is essential to be aware of signs that a device may be compromised.

Explore these 12 indicators of compromise and steps to take if a breach is suspected.

1. Unexpected Device Behavior

Unexpected behavior is one of the primary signs of IoT device hacking. It may turn on or off without user input, change settings spontaneously, or perform tasks outside its normal function. For instance, a smart lightbulb might start flickering erratically, or a security camera might pan without command. These anomalies often indicate unauthorized access.

2. Increased Bandwidth Usage

A sudden spike in bandwidth usage can be a red flag. Hackers may use compromised IoT equipment as part of a botnet — a network of hacked devices performing coordinated tasks such as launching attacks or sending spam emails — which consumes significant network resources. Monitoring network traffic or unusual activity can help detect this. Tools like network monitors or routers with built-in analytics can be valuable in identifying these spikes.

3. Unexplained Data Traffic

Like increased bandwidth usage, unexplained data traffic to unfamiliar IP addresses suggests a compromised system. Hackers may be exfiltrating data or using the gadget for malicious purposes. Regularly reviewing network logs and using intrusion detection systems can help spot this unusual traffic.

4. Slow Device Performance

Compromised IoT tools often exhibit poor performance. Machines might respond slowly or freeze frequently. This sluggish behavior can result from malware using device resources. If an IoT gadget that typically operates smoothly begins to lag or malfunction, it particularly warrants closer inspection for evidence of device hacking.

5. Unusual Account Activity

Monitoring accounts linked to IoT gadgets for unusual activity is essential. Unauthorized login attempts, password changes, or unknown devices accessing accounts can indicate a breach. Implementing multi-factor authentication and regular password updates can mitigate these risks straightaway.

6. Disabled Security Features

Disabled security features like firewalls, antivirus software, or device encryption without explanation could signal a hacking attempt. Regularly checking and re-enabling these features overall is a good practice. Ensure that all equipment has up-to-date firmware and security patches applied.

7. New and Unknown Software Installations

Unrecognized software on an IoT device can be a sign of a hack. Malware and unauthorized applications may be installed to facilitate further exploitation. Periodically auditing installed software and removing any unfamiliar programs helps maintain security.

8. Alerts from Security Tools

Security tools such as antivirus programs, intrusion detection systems, or firewall logs often provide alerts about suspicious activity. These indicators of compromise (IOCs) are crucial for a secure IoT ecosystem and for preventing device hacking. Although they should not be your whole solution in threat intelligence, contextualizing and maximizing what they offer can enhance their value. Ignoring these alerts can lead to further compromise. Regularly reviewing and responding to these alerts is crucial for a secure digital environment.

9. Loss of Gadget Control

A loss of control over an IoT gadget — where commands are ignored or overridden — indicates a potential compromise. This breach is especially concerning for security-critical tools like locks or surveillance systems. In such cases, isolating the device from the network and performing a security check is a good idea.

10. Strange Device Network Names

Hackers may change compromised tools' network names or service set identifiers (SSIDs) to something unusual or offensive. This action can serve as a sign that a device has been breached. Regularly checking and confirming the SSIDs of all network machines can help detect such changes early.

11. Increased Energy Consumption

An unexplained increase in energy consumption can indicate hacking of an IoT device. Hacked gadgets may run additional processes or functions, leading to high energy use. Accordingly, monitoring and comparing energy usage patterns can help identify such anomalies.

12. Notifications of Security Breaches

Take notifications from manufacturers about security breaches related to specific IoT machines seriously. often include instructions for mitigating risks and securing the device. Following these guidelines quickly can prevent potential exploitation.

5 Steps to Follow If a Compromise Is Suspected

For instance, if any of these indicators are observed, immediate action is necessary.

1. Disconnect the device: Isolate the compromised gadget from the network to prevent further damage or data exfiltration.
   
2. Update firmware and software: Ensure the latest security patches and firmware updates are applied. Cybersecurity measures can fix unknown vulnerabilities and protect against future attacks.
   
3. Reset the gadget: Perform a factory reset to remove any malicious software. Reconfigure the tool with strong, unique passwords and security settings.
   
4. Monitor network traffic: Use network monitoring tools to identify and analyze suspicious traffic. Monitoring network activity can help detect malicious activity.
   
5. Consult security professionals: If the situation seems complex or beyond personal expertise, consulting cybersecurity professionals can provide more in-depth analysis and fixes.

The Key to IoT Security

Vigilance is essential when it comes to IoT security. Recognizing the signs of a compromised device and responding quickly can mitigate risks and safeguard personal information. By staying informed and proactive, users can enjoy the benefits of IoT while minimizing the associated cybersecurity threats. Maintaining robust security practices, including regular updates, monitoring, and speaking with experts, ensures a safer and more secure connected environment.