earlier this year, the hospital's computer system was infected by a virus called tesla crypt. experts at software security group know this problem. it is something they deal with on a regular basis. >> when this ransom ware answers the computer, it encrips the user's files. you get a message saying the data is still there but cannot be accessed unless you pay a fee. >> even small towns have been victims of ransom ware. the town hall paid the ransom. >> i think it was a mistake because we shouldn't let ourselves be blackmailed. >> imagine if everyone got away with this, we would turn into a about a nana republic. >> law enforcement experts agree that paying ransom is the wrong way to respond. >> it encourages repeat offenses and makes the blackmailers greedy. we should void this at all costs. reporter: cyber crime is on the rise. security engineers spot 300 mall wear programs every day. the digital underground has become its own business sector. it offers a variety of services. there are providers of mall wear that is preconfigured or upgradeable at a price. it's like buying a