Ransomware gives free decryption keys to victims who infect their friends
Next step (unless it is already there) could be affiliate marketing (pay 25% of the ransom to people who distribute the malware). If people start getting smart with backups, the response could be to switch blackmailing (pay or we'll distribute your files).I find this whole thing quite scary. We all know how difficult it is to protect yourself from a determined and skilled adversary. Now that there is clear business model and opportunity to make hundreds of millions[1] this thing will probably attract more and more people. Building botnets was a mass market operation. Ransomware could become more targeted, since the value of single infected machine can be much higher.[1] http://thehackernews.com/2015/10/cryptowall-ransomware.html