Ransomware is a type of malicious software that encrypts a victim's files. The victim is then asked to pay a ransom to the attacker to restore access to the files, either by providing a decryption key or by paying a fee. Ransomware attacks are typically carried out using a Trojan that is disguised as a legitimate file and is downloaded or opened by the victim. Once the victim's system is infected, the ransomware begins to encrypt files on the system, making them inaccessible. The victim is then presented with a ransom demand, which may be delivered in the form of a message on the infected computer or through a separate communication, such as an email.
Ransomware attacks can have serious consequences for individuals and organizations, as they can lead to the loss of important data and disrupt critical systems. In some cases, even after a ransom is paid, the attacker may not provide the victim with the means to decrypt the affected files. It is therefore important to take precautions to protect against ransomware attacks, such as keeping systems and software up to date, regularly backing up important data, and being cautious when opening email attachments or downloading files from the internet.