When I first started coding I was a child, and then a teenager, and now an adult. Back then I hid behind a handle, and tried to remain as anonymous as possible. The stuff I was doing may have been illegal, some of it was definitely risky and stupid. When I transitioned to writing helpful applications instead of harmful (I didn't write too many viruses but my code harmed more people than it helped), in other words when I became an adult, I dropped the handle. Handles are good for normal kids though, so predators don't know their real names and whatnot, but as an adult I don't worry about things like that. Identity theft is the only threat that I've really thought about when using my real name. I agree with the credibility aspect, and the "time-killing joker" view on handles. I suppose if you were world famous and only known by your handle it would be okay to keep it, but for me personally, it was time to drop it.