Aperture Finance has announced that its V3/V4 contracts have been exploited, prompting the suspension of core front-end functions to prevent new authorizations. The company is collaborating with security partners to investigate the breach. Users are advised to immediately revoke all authorizations for the Ethereum mainnet contract address 0xD83d960deBEC397fB149b51F8F37DD3B5CFA8913. Aperture Finance will provide a detailed report and further updates on the situation.