Imagine ransomware as a kind of digital kidnapper. It's a nasty program hackers use to take your important computer files hostage. Ransomware can lock your files completely, or even scramble them with a code, making them impossible to use. The hackers then demand a ransom, usually in the form of cryptocurrency, to unlock or restore your files. Don't pay them if you can avoid it, and always have good backups of your data!