Dan Lee, aka Tablo, is a Korean rapper who once had a huge fan base around the globe.
That changed after an anti-fan club formed online claiming that Lee was a fraud and liar.
Among the claims was that Dan Lee stole an identity and lied about graduating from Stanford University.
Now Lee is attempting to rebuild his career and prove his critics wrong.
Anchor Marco Werman speaks to Joshua Davis, a reporter for Wired magazine.
Davis investigated how and who started these online attacks.