The GERA token's deployer private key was compromised, allowing an attacker to transfer ownership of the smart contract to another address. This gave the attacker full control over the token contract.

The security of the GERA token was compromised due to private key leakage. Hackers transferred the ownership of the smart contract deployer of GERA tokens to another address 0x510E4d61663bE6a24D600AaF90F892dd8c8C61dC.