Frontrunner stealing bounty

[kingcocomango]

If both the bounty claim, and bounty approval are in the same block a frontrunner can steal the bounty funds.

[owocki]

Hmm... This is an interesting theoretical attack, but I wonder how practical it is. In that, the UI won't allow a user to enter an approval until the claim is in. And also an approval isn't going to approve a claim within 10s (3s) after casper.

[kingcocomango]

I agree its fairly unlikely (and impossible through the UI).

The contract also doesn't check the return value of transfers, which can return false on failure instead of throwing.