Good addition to the list of potential issues with PoS: since stakers are required to have staking keys online to sign txs, the dynamic validator set is vulnerable to silent key theft & majority attacks. h/t @Datavetaren
Note that this problem is unique to PoS.https://twitter.com/datavetaren/status/1012529987545698305 …
-
Show this thread
-
Whether these staking keys control the funds used for staking doesn’t matter. It’s about control: those who gain access to these keys gain control over minted blocks. Double spend etc.
1 reply 1 retweet 1 likeShow this thread
This weakness can be exploited in combination with other PoS weaknesses for maximum effects. E.g.: attackers can wait until the staking participation level gets low enough, so the number of staking keys/control points is at a minimum.
0 replies
1 retweet
1 like
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.
