[FatalLogic]

He has put his name on two previous papers that use similar methods to link bitcoin transactions and identify entities or individuals

The first paper seemed to contain some very basic misunderstandings of how bitcoin works, such as apparently mistaking the private company Blockchain.info for the Bitcoin blockchain itself. There were also other issues claimed - I don't recall the details. Adi Shamir responded to most of these claims, though he never explained the bizarre confusion over the Blockchain itself, and I think you can find some of that discussion on Bitcointalk.org if you search.

The second paper attracted a lot of attention because it identified an address used to move a large amount of money by Satoshi Nakamoto and linked that address to the Silk Road, with the clear insinuation that Satoshi Nakamoto was intimately connected to the Silk Road. However, simply Googling the address in question showed that it belonged to Dustin Tramell, who confirmed that it was his. In reality, there was no link to Satoshi Nakamoto. Adi Shamir withdrew that claim, and attempted to downplay the issue by laying the blame for sensationalizing it on others.