Ransomware, or “rançongiciel” in French, is a type of malicious software that encrypts files, making the data inaccessible. The attacker then demands a ransom, usually in cryptocurrency, to provide the decryption key.

This threat targets businesses more than individuals and can spread through malicious email attachments, downloads, or network vulnerabilities.

Ransomware has become one of the most damaging and lucrative cyberattacks.