Sure he has. Here's three examples:
1) He claimed that he had forged a clone of the Kos COLB from someone else's COLB. That was a lie, as he had only doctored up the Kos COLB itself and passed it off as a clone. 2) He claimed a Masters in Statistics and a Masters and a Doctorate in Experimental Psychology. That was a lie, as he does not have those degrees. 3) He claimed that he discovered that TechDude was a fraud, and that he never trusted him. That was a lie, as Polarik consistently defended TechDude for weeks, stating that he and TechDude were planning on working together. In fact, he went so far as to say "I can tell you that I know who is TechDude, and that he is who he says he is."
His conclusions are based on empiracal research using professional skills which are second to none.
He has no professional skills with regard to computers or document analysis. He is not the expert he professed to be, and his work and analysis are that of an amateur, not a professional. His skills are "second to none" only in the sense that they exceed zero.
Why is it so important that you expose Polarik as a fake.
The same reason I'll expose false quotes as bogus. I dislike the spread of misinformation, and Polarik dealt heavily in misinformation.
How much are you being paid, and is it taxable?