This is why I suggested to freeze these accts for a while until we get to the bottom of the true mystery. However, from what I have seen, there is reluctance to set a precedent of freezing an acct for whatever reasons, even this.
It's impossible in decentralized system. Let me describe it:- to freeze account we need to create code, that reject transactions from particular account ids;
- this code and list of acct ids must be included in all nodes of network;
- those nodes who doesn't contain rejecting code will fork when transactions from "frozen" accounts appear in blockchain;
- so, one more time: all nodes of network must contain rejecting code;
- so devs can't release software which start to reject frozen accouts right now; every changes of that type are always applied starting from some block in future, at least 3-4-5 days needed;
- in that time thief just move stolen coins to some other non-blocked account;
- so rejecting code will have no meaning.
Also, devs can't distribute online list of frozen accounts, because it leads to centralization.
That's all.
