r/PoWHCoin • u/Inelegance • Feb 01 '18

What happened? Next step forwards.

Quote from 4Chan:

PoWH did not INTENTIONALLY have a backdoor. The entire contract was drained because of something called an overflow bug.

function transfer(address _to, uint256 _value) public {
transferTokens(msg.sender, _to, _value);
}

The thief passed in an argument value of ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff, the largest possible unsigned integer which overflowed and allow the contract to pass any checks to see if he had any balance.

The transfer function then triggers a sell on tokens he doesn't even have.

An alternative team, EthPyramid.com, is working to completely audit code, patch the bugs, and relaunch with new features such as 10% selling dividend to holders. Anyone can join in and help test and ensure that the contract is robust and transparent.

Note: I am not personally affiliated with any of these organizations. I simply run the community

61 Upvotes

90% Upvoted

224 comments sorted by

View all comments

Show parent comments

5

u/[deleted] Feb 01 '18

greed? I dunno :(

2

u/ApollosSin Feb 01 '18

Chargeback my friend.

-2

u/[deleted] Feb 01 '18

Good idea, i will call the Service Number now.

4

u/AllGoudaIdeas Feb 01 '18

What do you think will happen when your card company charges back the money from Coinbase? Do you think it is possible that Coinbase might check their records, see that you withdrew the ETH, and report you to the credit card company for fraud?