[Symbiont Hires Cryptographer Who Broke SHA-1 Bitcoin News Also read: Forget QR Codes, NFC Bitcoin Wallet Cards Are Here. Symbiont Hires Famous Cryptographer Who Broke SHA-1 Hash Standard . Symbiont is a blockchain-based company that specializes in smart contract securities and distributed ledger applications. The startup was founded in 2015 by Adam Krellenstein, Mark Smith, Evan Wagner, and Robby Dermody. The company’s platform has been tested by ...]