CertiK: FOOMCASH lottery contract may have been exploited due to a vulnerability, with losses of approximately $1.8 million

Foresight News reported that, according to CertiK monitoring, the lottery contract of the privacy game project FOOMCASH experienced a vulnerability exploit (or a white-hat rescue operation), involving approximately $1.8 million. The root cause of the vulnerability may be the configuration of its Groth16 verifier, which allowed the attacker to repeatedly collect ZOOM tokens when all other inputs remained the same.