A botnet is a network of devices that have been secretly infected with malicious software and are remotely controlled by criminals. These can include computers, smartphones, smart cameras, or other devices connected to the internet.
A device in a botnet usually still functions normally, so the owner often doesn’t notice anything. Meanwhile, the device can be misused in the background to:
- send spam or fake messages
- attack and take down websites (a DDoS attack)
- spread malware (viruses) further
- help steal passwords or data
Such an infected device is sometimes called a “bot” or “zombie”.
Why is that a problem?
If your device is part of a botnet, it can be used for cybercrime without your permission. Your internet connection may slow down, your device may perform poorly, and your data may be at risk.
How does your device get infected?
This often happens through:
- a malicious link or attachment in a message
- unsecure or outdated software
- weak passwords (often the device’s “default” password)
- poorly secured smart devices
What can you do?
You can avoid many risks by:
- Changing the default password immediately after setting up the device
- Using strong, unique passwords
- Installing updates as soon as possible
- Enabling two-factor authentication whenever possible
- Installing apps and software only from trusted sources
- Securing your Wi-Fi properly
- Using antivirus or security software whenever possible
More information about how to protect your smart devices.
Do you think your device is infected?
Watch for signs such as a slow device, unusual data usage, or strange activity. Have your device checked, run a virus scan, and change your passwords.
