Core

Dust

Bitcoin

Sign

<ul>
 <li style="font-weight: 400;">A Dusting Attack sends tiny amounts of crypto to trace wallet activity and identify users.</li>
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<ul>
 <li style="font-weight: 400;">Moving the dust allows attackers to link multiple addresses to a single wallet.</li>
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<ul>
 <li style="font-weight: 400;">Avoid interacting with dust and use wallet alerts to protect your privacy.</li>
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A Dusting Attack uses tiny crypto transfers to trace wallet activity and expose user identities. Learn how dust works, how attacks happen, and how to protect your privacy on-chain.
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<h2 id="what-is-a-dusting-attack">WHAT IS A DUSTING ATTACK?</h2>
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In the crypto world, “dust” refers to an extremely small amount of cryptocurrency—so small that most users wouldn’t even notice it. In the case of Bitcoin, the smallest unit is 1 satoshi (0.00000001 BTC), and the term “dust” typically refers to a few hundred satoshis.
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On centralized exchanges, “dust” also describes tiny leftover token balances that remain after a trade is executed. These amounts are usually too small to trade again. Some platforms, like Binance, allow users to convert dust into BNB, giving otherwise stuck balances a use.
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<h3 id="dust-has-no-single-official-definition">📌 Dust Has No Single “Official” Definition</h3>
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On the Bitcoin network, dust is defined differently depending on the wallet software or client implementation. Bitcoin Core uses a practical rule of thumb:
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✏️ Any transaction output that costs more to spend than its own value is considered dust.
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In other words, if the BTC you send is worth less than the required transaction fee, the network considers it uneconomical and potentially spam, making it likely to be rejected by validating nodes.
<h3 id="how-the-dust-limit-is-calculated">📌 How the Dust Limit Is Calculated</h3>
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The dust limit depends on the size of the transaction input and output. Because transaction types vary, the thresholds differ as well. Common values include:
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<ul>
 <li style="font-weight: 400;">For a standard (non-SegWit) Bitcoin transaction, the dust limit is 546 satoshis. </li>
</ul>
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<ul>
 <li style="font-weight: 400;">For native SegWit transactions, the dust limit is 294 satoshis. </li>
</ul>
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This means that any standard transaction output equal to or below 546 satoshis is likely to be treated as dust and may be rejected by nodes during verification.
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&gt;&gt;&gt; More to read: <a href="https://www.coinrank.io/learn/what-is-51-attack-how-to-prevent-it/" rel="noopener noreferrer nofollow">What is 51% attack? How to Prevent It</a>
<h2 id="how-a-dusting-attack-works">HOW A DUSTING ATTACK WORKS</h2>
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Malicious actors learned that most crypto users don’t pay attention to tiny amounts of tokens appearing in their wallets. Leveraging this, attackers began sending just a few satoshis of LTC, BTC, or other cryptocurrencies to a large number of addresses. This process of distributing extremely small amounts of tokens is the first step of a Dusting Attack.
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Once these small amounts of dust are sent, the attacker moves on to the key phase: analyzing all the dusted addresses together. Their goal is to determine which of these addresses belong to the same wallet. By correlating transaction patterns, movements, and timing, attackers attempt to map multiple addresses back to a single user.
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🔍 The motivation behind this is straightforward:
 If an attacker successfully links dusted addresses—and therefore a wallet—to a business or an individual, they can target the victim with phishing attempts, extortion threats, or other forms of cyberattacks.
<h3 id="not-limited-to-bitcoin-anymore">📌 Not Limited to Bitcoin Anymore</h3>
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Dusting Attacks originally appeared on the Bitcoin network but have since expanded to Litecoin, BNB Chain, and many other cryptocurrencies. Any asset running on a transparent, traceable public blockchain is theoretically vulnerable because attackers can observe transaction movements on-chain.
<h3 id="why-moving-the-dust-matters">📌 Why Moving the Dust Matters</h3>
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A Dusting Attack relies heavily on analyzing how the dusted funds are moved. If the dust remains untouched, attackers cannot connect multiple addresses or deanonymize the wallet behind them.
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This is why many modern wallets now include built-in alerts that warn users when suspiciously small transactions—possible dust—appear in their accounts. These warnings help users avoid interacting with the dust and protect their privacy.
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&gt;&gt;&gt; More to read: <a href="https://www.coinrank.io/learn/crypto-risks-101-beginners-guide/" rel="noopener noreferrer nofollow">Crypto Risks 101 | A Beginner’s Guide</a>
<h2 id="dusting-attack-summary">DUSTING ATTACK SUMMARY</h2>
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While the Bitcoin blockchain itself is extraordinarily difficult to hack or compromise, user wallets remain a critical point of vulnerability. When you create a new wallet or address, you typically provide no personal information—meaning that even if someone gains access to your funds, proving that a theft occurred is nearly impossible. And even if you could prove it, the decentralized nature of blockchain offers no straightforward path to recover stolen assets.
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This is precisely why Dusting Attacks matter. Instead of breaking the blockchain, attackers target the user. By sending tiny, seemingly insignificant amounts of crypto to multiple addresses, they attempt to trace transaction patterns and link addresses back to a single wallet or identity. Once that connection is made, the victim becomes exposed to more aggressive threats such as phishing campaigns, blackmail attempts, or targeted cyberattacks.
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In other words, the blockchain may be secure—but your privacy isn’t guaranteed. Understanding Dusting Attacks and avoiding interaction with suspicious dust transactions is essential for protecting your wallet and keeping your identity off the radar of malicious actors.
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〈<a href="https://www.coinrank.io/learn/what-is-dusting-attack-in-crypto/" rel="noopener noreferrer nofollow">What is Dusting Attack in Crypto?</a>〉這篇文章最早發佈於《<a href="https://www.coinrank.io" rel="noopener noreferrer nofollow">CoinRank</a>》。

What is Dusting Attack in Crypto?

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