Blockchains: How to Steal Millions in 2^64 Operations
https://research.kudelskisecurity.com/2018/01/16/blockchains-how-to-steal-millions-in-264-operations/ [research.kudelskisecurity.com]
2018-01-18 17:44
TL;DR: you can hijack certain Lisk accounts and steal all their balance after only 2^64 evaluations of the address generation function (a combination of SHA-256, SHA-512, and a scalar multiplication over Ed25519’s curve).
source: green