CTB-Locker is a malicious program categorized as ransomware. Once it infiltrates the computer it encrypts the data stored on the hard drive and demands ransom from the owner of the infected PC. CTB-Locker demands to follow the instructions on the screen to learn how to purchase and pay the ransom which varies from around .04 BTC to .2 BTC (Bitcoin). It is equivalent to approximately $24-$120 USD. According to the developers of the CTB-Locker, paying the ransom is the only solution if the users want to regain access to the stored data.