In our increasingly connected world, the Internet of Things (IoT) brings both convenience and vulnerabilities. From smart thermostats to connected refrigerators, these gadgets are essential to modern life, but they also pose potential security risks. However, IoT devices are not immune to hacks, and it’s important to be aware of signs that your device may be compromised.
Learn about 12 indicators that could signal a compromise and steps to take if you suspect a compromise.
1. Unexpected device behavior
Unexpected behavior is one of the main signs that an IoT device has been hacked. It may turn on or off without user input, change settings suddenly, or perform tasks outside of its normal function. For example, a smart light bulb may blink erratically or a security camera may pan without command. These anomalies are often indicative of unauthorized access.
2. Increased Bandwidth Usage
Sudden increases in bandwidth usage are a red flag. Hackers can use compromised IoT equipment as part of a botnet (a network of hacked devices that perform coordinated tasks like launching attacks or sending spam emails) to consume large amounts of network resources. Monitoring network traffic and unusual activity can help detect this. Tools such as network monitors and routers with built-in analytics can help identify these spikes.
3. Unexplained data traffic
Similar to increased bandwidth usage, unexplained data traffic to unknown IP addresses is an indication that your system has been compromised. Hackers may be trying to steal your data or use your gadget for malicious purposes. Regularly reviewing your network logs and using an intrusion detection system can help you spot this unusual traffic.
4. Slow device performance
Compromised IoT tools often exhibit poor performance. Machines may respond slowly or freeze frequently. This slowdown can be caused by malware using the device’s resources. If a normally smooth-running IoT gadget starts to lag or malfunction, it’s worth examining it especially closely 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 access to an account by an unknown device could be signs of a compromise. Implementing multi-factor authentication and regular password updates can immediately mitigate these risks.
6. Security features are disabled
Security features such as firewalls, antivirus software, and device encryption being disabled without explanation can be a sign of a hacking attempt. It’s good practice to check these features periodically and re-enable them throughout. Make sure all your equipment has the latest firmware and security patches.
7. Installation of New and Unknown Software
Unrecognized software on IoT devices can be a sign of hacking. Malware or unauthorized applications may be installed, facilitating further exploitation. Regularly auditing installed software and removing unfamiliar programs can help you stay secure.
Security tools such as antivirus programs, intrusion detection systems, and firewall logs frequently provide alerts about suspicious activity. These indicators of compromise (IOCs) are essential for a secure IoT ecosystem and preventing devices from being hacked. Threat intelligence is not the end all be all of the solution, but contextualizing and making the most of what it has to offer can increase its 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 control over gadgets
Losing control of an IoT gadget and having your commands ignored or overwritten represents a potential compromise, which is of particular concern for security-sensitive tools such as locks and monitoring systems. In such cases, it is advisable to isolate the device from the network and perform security checks.
10. Strange Device Network Names
Hackers may change the network name or service set identifier (SSID) of a compromised tool to something unusual or offensive. This behavior can be an indication that the device has been compromised. Regularly checking and verifying the SSIDs of all network machines can help detect such changes early.
11. Increased energy consumption
If you notice an unexplained increase in energy consumption, it could be that your IoT device has been hacked. A hacked device may perform additional processes or functions, which may lead to increased energy consumption. Hence, by monitoring and comparing energy usage patterns, you can identify such anomalies.
12. Notification of Security Breaches
If a manufacturer notifies you of a security breach related to a particular IoT machine, take it seriously. Such warnings often include steps to mitigate the risk and secure the device. Following these guidelines quickly can help prevent potential exploits.
Five steps to follow if you suspect a breach
For example, if any of these indicators are observed, immediate action should be taken.
Disconnect the device: Isolate the compromised gadget from the network to prevent further damage or data exfiltration.
Update firmware and software: Ensure you have the latest security patches and firmware updates. Cybersecurity measures can help patch unknown vulnerabilities and protect against future attacks.
Reset your gadget: Reset it to factory settings to remove any malicious software. Reconfigure your tools with strong, unique passwords and security settings.
Monitor network traffic: Use network monitoring tools to identify and analyze suspicious traffic. Monitoring network activity can help detect malicious activity.
Consult a security expert: If you believe the situation is complex or beyond your personal expertise, consulting a cybersecurity expert can provide a more in-depth analysis and remediation.
The key to IoT security
When it comes to IoT security, vigilance is essential. Recognizing the signs of a compromised device and responding quickly can help mitigate risks and protect personal information. Staying informed and proactive can help users enjoy the benefits of IoT while minimizing associated cybersecurity threats. Maintaining robust security measures, including regular updates, monitoring, and speaking with experts, will ensure a safer, more secure, connected environment.
