At Tether found a vulnerability double-spend
Source:
Chinese private firm cybersecurity SlowMist found the vulnerability of double spending in a Tether. The founder of the platform OmniLayer established USDT, published his explanation of the incident. It is reported .
theTether under the threat of double-spending
Team SlowMist said that could produce a successful transaction USDT with an invalid value of the coins on the ring exchange. This means that you can send non-existent coins Tether. Immediately after the tweet SlowMist founder OmniLayer hastened to refute the information about the vulnerability of USDT.
Turns out, the exchange didn't check desired properties of a transaction. It adopted the transaction value valid=false (which should not be), and right after she scored the second transfer option is valid=true. If I'm not mistaken, this is the problem of poor integration of the exchange.
The Second largest exchange OKEx issued a formal appeal regarding the error. Experts exchange conducted an analysis and reported that OKEx "not vulnerable".
A user under the nickname CryptoMedication posted a picture with a description of the error. He also mentioned that the problem of double-spending is a serious threat to cryptocurrencies, as the vulnerability can be endlessly exploited by attackers.
Tether Previously issued 250 million new tokens, backed by the us dollar. In March, the issue of 300 million tokens had little effect on the price of Bitcoin – cryptocurrency rate increased. Recall USDT than once suspected market the crypt.
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