and millions of internet users. >> how good does one have to be? we hear about hackers and assume they do this for a while, dedicate so much time to this and are super smart. but do you have to be that sophisticated of a hacker if you have very little information about somebody? if you have enough, can you do something with it? >> any website you visit is going to be able to tell who you are amongst 1 million, 3 million people. so they already have some knowledge who you are. and based on that they're going to use a data base of information. all you need is the key. >> that's scary. this is what we're going to do this morning. you feel pretty confident. i don't think you've seen this. you don't know the name or the log-ins, the user names. with this information, you think you'll be able to do what? >> i'm going to use his digital fingerprint and see if i can find it first based on this information. this is information that websites already have. and then i'm going to look up all of the available internet records to see what all is out