Specter: A certain MetaMask Swap routing contract has been blacklisted by Tether for nearly 5 years

PANews reported on September 24 that blockchain security researcher Specter issued a document saying that when investigating the Payy Network attack, he discovered that the address of a MetaMask Swap routing contract was blacklisted by Tether in 2021 and has been on the blacklist since then. Specter said he had not noticed this before.