I kindof doubt it, because I don't think there are any mechanisms to do that. Since these ICOs are all running on top of some existing coin/blockchain, unless

I kindof doubt it, because I don't think there are any mechanisms to do that. Since these ICOs are all running on top of some existing coin/blockchain, unless there is a native mechanism for undoing a transaction (I don't believe any mainstream coin/blockchain supports this), the only option would be a hard fork. Side note: You'd also be impacting other transactions which have occurred after the transaction that you want to roll back. Considering how blocks incorporate the identity of previous blocks, all of the block-minters would have to participate in the roll back. By the way, how would you verify that ICO tokens were actually stolen? In the modern world, that is normally done using a police report, but not everyone in the world is going to trust that. And even with a police report, if the police are unable to get the stolen good back, then you're stuck. That's why people commonly take out insurance on their possessions, and why (in the United States) most cash deposits are insured by the NCUA or the FDIC (up to certain limits).