In the interest of protecting our customers and as a precautionary measure, we are temporarily suspending trading and deposits of all ERC20 tokens along with a suspension of all withdrawals (fiat and crypto) across QRYPTOS and QUOINEX.
We are doing this in response to the discovery of the BatchOverFlow smart contract bug, which can be exploited by an attacker to create an unlimited supply of ERC20 tokens. We will resume normal business after we are certain there are no potential risks.
You can learn more about the BatchOverFlow smart contract bug here: https://medium.com/coinmonks/alert-new-batchoverflow-bug-in-multiple-erc20-smart-contracts-cve-2018-10299-511067db6536
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