Loan vocabulary. Neologism, (anglicism). The English "ransom", rescue, and "ware", short for "software". A ransomware is a type of malicious software that restricts access to some infected files, and to free them, asks a ransom in return. It is of recent creation. From 2013 it comes increasing its use harmful and speculative.
Ransomware is incorrectly written and should be written as "ransomware, English International." being its meaning:
Computer virus of high danger that less than two days ago endangered a lot of systems of countries of first level: Great Britain (infected health system), Russia (especially on the network of railways, Spain (Telefónica had to stop working at Headquarters), France and even America.) Encrypt documents, demanding to rid them 300 dollars, payable in 3 days, if the required amount of that time becomes twice and said that if they spend 18 days everything live on a computer is unrecoverable.