 However, this leads to a situation where bugs, including security holes, are visible to all yet may not be quickly fixed.Such an attack, difficult to fix quickly, was successfully executed on The DAO in June 2016, draining in Ether while developers attempted to come to a solution that would gain consensus.The DAO program had a time delay in place before the hacker could remove the funds; a hard fork of the Ethereum software was done to claw back the funds from the attacker before the time limit expired.