A 25-cent Bitcoin deposit was enough to expose a serious bridge security failure.

On Sept 11, an attacker caused roughly 46.1B syBTC to be minted from just 330 satoshis.

The important part isn’t the huge number.

It’s the broken rule underneath:

BTC locked = BTC-backed tokens minted

Two validation issues allowed the system to treat a tiny deposit as a much larger amount.

Only about 4.39 WBTC, worth roughly $336K, was actually extracted before the affected route was stopped.

The lesson is simple:

Bridges need to verify the real assets locked before creating tokens that represent them.

One unchecked input can break the entire accounting model.

$BTC

#Bitcoin #DeFi