The FBI’s cyber division urges smart device owners to stay vigilant against a stealthy scam that hijacks gadgets and routes malicious traffic through home networks. Cybercriminals target vulnerable Internet of Things (IoT) devices like smart TVs, security cameras, thermostats, refrigerators, fitness trackers, and even children’s toys to build botnets for attacks.
Three Key Warning Signs
Officials identify three primary indicators of a compromise:
1. Sudden Spike in Data Usage
Malware compels infected devices to transmit or receive large volumes of data, including spam emails, website attacks, or communications with hacker servers. This activity surges through your internet connection and IP address, inflating monthly data consumption.
2. Unexpected Increase in Internet Bills
Following elevated data use, bills may rise sharply, particularly with providers charging for excess usage. Disconnect suspect devices immediately and report incidents via official channels.
3. Sluggish Device or WiFi Performance
Hijacked gadgets run malware that consumes processing power, memory, and bandwidth continuously. This creates lag, making devices or entire home networks feel unresponsive, even during normal operation.
The FBI states: “Cyber actors actively search for and compromise vulnerable Internet of Things (IoT) devices for use as proxies or intermediaries for Internet requests to route malicious traffic for cyber-attacks and computer network exploitation.”
How Hackers Infiltrate Devices
Attackers exploit default passwords like “admin” or “1234” that users often overlook. Outdated firmware creates vulnerabilities, while zero-day flaws in factory software from manufacturers allow access to new devices until patches deploy. No phishing clicks are required for entry.
Essential Defense Strategies
Protect devices by rebooting them and routers frequently, as most malware resides in memory and clears on restart. Change all default passwords upon setup, apply the latest software updates, and monitor monthly data usage closely.
The FBI advises: “Reboot devices regularly, as most malware is stored in memory and removed upon a device reboot. It is important to do this regularly as many actors compete for the same pool of devices and use automated scripts to identify vulnerabilities and infect devices.”
