Cryptojacking is a form of cybercrime where hackers use malware to hijack a device's processing power to mine cryptocurrencies. This is often done by embedding harmful scripts in websites or applications, which can execute in the background when a user visits the compromised site or runs the infected program. Victims may notice a decrease in performance, increased energy costs, or overheating of their devices. Cryptojacking not only impacts the victim's devices but can also put the larger network at risk if many devices are affected.