"Ransomware" is computer malware that installs covertly on a
victim's computer, executes a cryptovirology attack that
adversely affects it, and demands a ransom payment to
restore it. Simple ransomware may lock the system in a way
which is not difficult for a knowledgeable person to
reverse, and display a message requesting payment to unlock
it. More advanced malware encrypts the victim's files,
making them inaccessible, and demands a ransom payment to
decrypt them. The ransomware may also encrypt the computer's
Master File Table (MFT) or the entire hard drive. Thus,
ransomware is a denial-of-access attack that prevents
computer users from accessing files since it is intractable
to decrypt the files without the decryption key. Ransomware
attacks are typically carried out using a Trojan that has a
payload disguised as a legitimate file!
We never understood before how important it is for our technology providers to be business capable and to actively participate in making our business function effectively. We now know what we have been missing!