A significant security flaw in the Aptos Wormhole bridge, which could have led to a $5 million loss through fake transactions, was recently identified and swiftly patched by blockchain security firm CertiK. This vulnerability stemmed from incorrect implementation of MOVE programming language modifiers, allowing unauthorized calls to a crucial function. The rapid response included removing risky permissions and limiting potential future transaction volumes to mitigate risks. This proactive measure by CertiK has reinforced the security of the bridge, essential for maintaining trust and functionality in cross-chain transactions.
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