(also Downup, Downadup, Kido)
Conficker is a type of computer worm that targets Microsoft Windows operating systems. It first appeared in 2008 and quickly spread across the internet, infecting millions of computers worldwide.
How does Conficker work?
The Conficker worm exploits a vulnerability in the Windows operating system that allows it to spread by copying itself to network shares and removable media that are accessible from an infected computer. When a user inserts an infected USB drive into another computer, the worm can spread to that computer and continue infecting other systems on the network. Once it enters a system, it is difficult to detect and remove.
After infecting a computer, Conficker tries to contact command and control servers to receive instructions from its owner. The worm can also disable security software and block access to security-related websites. It can download and install additional malware, which can be used by the attackers to steal sensitive information, take control of the infected computer, or launch attacks on other systems.
How to prevent Conficker from getting onto your device
- Keep your operating system updated. Microsoft has released security patches to fix the vulnerability that Conflicker exploited, but the worm is still active.
- Use antivirus software and keep it up to date. It’s best to use an antivirus solution that stops the threats before they can enter your device, like NordVPN’s Threat Protection.
- Use strong passwords and change them regularly. Conficker can crack weak passwords and use them to spread to other systems on the network.
- Be careful when opening email attachments or clicking on links, especially if they come from unknown or suspicious sources.