Ronin Bridge was attacked due to an upgrade deployment script error by Verichains. This has caused significant disruption in the crypto community.
Ronin bridge hack resulted from a failed upgrade deployment script which didn't call a vital initialization function, reducing the vote threshold to zero, and allowing unauthorized withdrawals.
Verichains revealed that the Ronin bridge hack was due to an error in the upgrade deployment script, which failed to call a critical initialization function, leaving the vote threshold at zero and enabling unauthorized withdrawals.