Earlier this month, the popular Ethereum (ETH) layer-2 solution Polygon (MATIC) carried out a hard-fork, though in silence and with no official explanation. Now, exactly 24 days later, it justified its actions in a postmortem, citing a critical vulnerability that could have drained the network of MATIC 9.3bn (USD 23.56bn at current rates).
"Considering the nature of this upgrade, it had to be executed without disclosing the actual vulnerability and without attracting too much attention," said
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