Where would the hacking occur? Only if one team member steals money or coins, Otherwise coins are safe in whatever wallet they have them stored. Every hacking attempted so far has something to do with someone from the inside, It is always inside job, ICO's are not keeping their coins on a public computer or would never give private keys to hackers.
If I'm not wrong, some projects lived this before. Some of them got hacked in their ethereum fund wallets in parity. Some of them lived thi during ico by the replacement of their ETH contract address by the hackers.