To spend Bitcoin "dust attack"? How it works and who to fear?
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It Seems that the Bitcoin back on the attack. No, this time the cryptocurrency has not been attacked by unscrupulous miners or something like that. At this point in the blockchain, you can see a lot of rather strange transactions. Purse Samourai marks them as «dust attack», which may cause significant impact on the privacy of the users of Bitcoin.
theWhat this is
Bitcoin lacks privacy and anonymity, this is for anybody not a secret. Although government officials deny it, the fact remains — the main cryptocurrency is very clear in the matter of transfer of funds. There are additional solutions like mixers transaction, but even they can't guarantee complete anonymity.
Such services «untie» inputs transaction when sending coins in the network. As a result, to identify the original sender is almost impossible, since all digital «bread crumbs» carefully swept out. While there are no laws prohibiting the use of mixers. And yet most often they are used, it is the thieves and criminals.
Recently, the mixers were serious problems — now to disclose their clients, you can use «dust attacks». Their essence consists in sending small amount of coins to different addresses. While it is not clear why the transaction committed precisely at these wallets.
For a successful attack the victim must spend bitcoins sent to her. Most often this is not a problem because users don't even pay attention to a few extra Satoshi, who appeared on the wallet. Once the address leaves the cryptocurrency «dust attacks», the initiators will be able to associate the inputs of a transaction with the wallet and thereby track the movement of funds on it.
If you have recently received a very small amount of BTC in your wallet unexpectedly, you may be the target of a "dusting attack" designed to deanonymise you by linking your inputs together — Samourai users can mark this utxo as "Do Not Spend" to nip the attack in the bud.
— Samourai Wallet (@SamouraiWallet)
In fact, «dust attacks» no one was seriously hurt, because in their course, not crypt or steal private keys. However, such incidents make us think of further enhancements of Bitcoin in the sphere of anonymity.
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