software, found them, and took everything out. >> reporter: cyber-crime is a growing threat to the global economy. a june report pegs its cost at more than $400 billion a year. at this command center for the security firm mannediant, technicians constantly monitor internet activity, looking for cyber attacks. even jim lewis admits it is extremely difficult to protect yourself. >> i do online banking, right, but when you do it, you have to realize, maybe some guy names igor is also watching what i'm up to, and that's a risk we all have to take. y reporter: lewis says that you should change your passwords moery month, but even doing that does not guarantee fraud protection. scott, government investigators say they have now spoken to hold security and may launch their own investigation. >> pelley: can't remember the passwords i already have. jeff pegues in our washington bureau. thank you, jeff. tonight, vladimir putin is hitting back at countries that