Wasn't the biggest scam the hackings of some of the Darknet markets? Didn't the owner of sheep run off with millions and was then caught later on trying to launder funds and arrested?
Possibly, but no. Have you even read the thread title?
It says the biggest scammer on Bitcointalk, i.e. here; not on the Darknet.
I am new to this forum and I can see that 20% of the users have red trust.
They've definitely deserved that red trust. A lot of them tend to complain but that just wastes everyone's time.