{"id":17567,"date":"2025-03-13T11:47:04","date_gmt":"2025-03-13T11:47:04","guid":{"rendered":"https:\/\/dogewisperer.com\/?p=17567"},"modified":"2025-03-13T11:47:04","modified_gmt":"2025-03-13T11:47:04","slug":"professional-sandwich-artist-rinses-crushed-trader-for-700k-in-onchain-heist","status":"publish","type":"post","link":"https:\/\/dogewisperer.com\/?p=17567","title":{"rendered":"Professional Sandwich Artist Rinses Crushed Trader For $700K In Onchain Heist"},"content":{"rendered":"<div>\n<p>A crypto trader recently fell victim to a sophisticated on-chain heist attack, swapping $733,000 worth of USDC for $19,000 USDT in return. This incident shows the trading systems\u2019 technical vulnerabilities and the cunning strategies employed by the crypto sandwich artist. The artist used precise timing and transaction ordering to drain the trader\u2019s funds.<\/p>\n<p>By taking advantage of the mechanics of automated market makers (AMMs) and the transparency of blockchain transactions, the attacker executed a heist that left the trader with a fraction of their original buy.<\/p>\n<p>When a trader submits a large swap order, the transaction enters the Ethereum mempool, a public holding area for pending transactions. Miners or validators then pick up these transactions to include in the next block.<\/p>\n<p>Because the blockchain is transparent, anyone can observe these pending trades, including the exact amount and token pair involved.<\/p>\n<p>Since, in this case, the trader intended to swap a significant sum, the attacker sniped the victim\u2019s large order and attacked the trade\u2019s outcome.<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">Crypto trader swaps $733,000 for just $19,000 in large sandwich attack. <a href=\"https:\/\/t.co\/8gvF3zsZDY\" target=\"_blank\" rel=\"nofollow\">pic.twitter.com\/8gvF3zsZDY<\/a><\/p>\n<p>\u2014 Sneta Gupta (@SnetaGupta) <a href=\"https:\/\/twitter.com\/SnetaGupta\/status\/1900067200633102607?ref_src=twsrc%5Etfw\" target=\"_blank\" rel=\"nofollow\">March 13, 2025<\/a><\/p>\n<\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h2>Sandwich Artist and His Crypto Heist: an On-Chain Lesson<\/h2>\n<p>The crypto heist attack unfolded in two key steps. First, the sandwich artist placed a \u201cfrontrun\u201d transaction ahead of the victim\u2019s swap. This initial trade artificially inflated the token price the victim bought, driving up slippage (the difference between the expected price and the actual execution price).<\/p>\n<p>Slippage is a common risk in large trades on AMMs, where liquidity pools can shift dramatically with big orders. The attacker ensured the victim would receive far fewer tokens than anticipated by pushing the price higher.<\/p>\n<p>Then, after the victim\u2019s trade executed, the attacker placed a second \u201cbackrun\u201d transaction to sell the tokens they had just acquired at the inflated price, pocketing the difference. The result: the trader swapped $733,000 USDC for just $19,000 USDT, while the attacker walked away with $714,000 in profit.<\/p>\n<p>This loss is recorded in 6 TXs, with one TX\u00a0 losing him more than $200,000.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-215105\" src=\"https:\/\/99bitcoins.com\/wp-content\/uploads\/2025\/03\/Screenshot-2025-03-13-at-5.06.29%E2%80%AFPM.jpg\" alt=\"A USDC-USDT swap hit a trader by more than $700K thanks to a crypto sandwich artist attack. The biggest crypto on-chain heist?\" width=\"1610\" height=\"304\"><\/p>\n<p>(<a class=\"general-link\" href=\"https:\/\/etherscan.io\/tx\/0xee9fcd2b9996e96b642cb4cda47fc140f98fdaf07ee02657743d4bfcc4670106\" target=\"_blank\" rel=\"nofollow noopener nofollow\"><strong>source<\/strong><\/a>)<\/p>\n<p>Onchain data reveals the precision of this maneuver. The victim\u2019s transaction was likely high enough to handle a typical trade but insufficient to absorb a massive order without significant price impact. The attack takes advantage of this crypto vulnerability and crafts its transactions to sandwich the victim\u2019s order within the same block.<\/p>\n<style>\n    .cwp-coin-chart svg path {\n        stroke-width: 0.65 !important;\n    }<\/p>\n<\/style>\n<p>    <span class=\"cwp-coin-widget-container\" data-id=\"eth-ethereum\" id=\"coin_widget_id_67d2c47cbc651\"><\/p>\n<p>        <!-- name of the coin in the text --><br \/>\n        <span class=\"cwp-coin-widget-wrapper\" data-id=\"eth-ethereum\"><br \/>\n            <span class=\"cwp-coin-widget-holder \" style=\"background:#e6eaed;\"><br \/>\n                <span class=\"cwp-coin-name\" data-id=\"eth-ethereum\"><br \/>\n                    <span class=\"cwp-coin-icon \"><\/span><br \/>\n                    <span class=\"cwp-coin-label \"><\/span><br \/>\n                    <span class=\"cwp-coin-symbol hidden\"><\/span><\/p>\n<p>                    <span class=\"cwp-coin-trend-holder\"><br \/>\n                        <span class=\"cwp-coin-price hidden\"><\/span><br \/>\n                    <\/span><br \/>\n                    <span class=\"cwp-coin-trend-holder\"><br \/>\n                        <span class=\"cwp-coin-trend \"><\/span><br \/>\n                    <\/span><\/p>\n<p>                <\/span><br \/>\n            <\/span><br \/>\n        <\/span><\/p>\n<p>        <!-- popup with basic info about the coin --><br \/>\n        <span class=\"cwp-coin-popup-wrapper \" data-id=\"eth-ethereum\" style=\"\"><br \/>\n            <span class=\"cwp-coin-popup-holder\"><br \/>\n                <span class=\"cwp-coin-name\"><br \/>\n                    <span class=\"cwp-coin-icon\"><\/span><br \/>\n                    <span class=\"cwp-coin-popup-name\"><\/span><br \/>\n                    <span class=\"cwp-coin-popup-symbol\"><\/span><br \/>\n                <\/span><br \/>\n                <span class=\"cwp-coin-price\"><br \/>\n                    <span class=\"cwp-coin-price-title\">Price<\/span><br \/>\n                    <span class=\"cwp-coin-price-holder\"><br \/>\n                        <span class=\"cwp-coin-price-value\"><\/span><br \/>\n                        <span class=\"cwp-coin-trend-holder\"><br \/>\n                            <span class=\"cwp-coin-trend\"><\/span><br \/>\n                        <\/span><br \/>\n                    <\/span><br \/>\n                <\/span><br \/>\n                <span class=\"cwp-coin-volume\"><br \/>\n                    <span class=\"cwp-coin-price-holder\"><br \/>\n                        <span class=\"cwp-coin-volume-title\">Volume in 24h<\/span><\/p>\n<p>                    <\/span><br \/>\n                    <span class=\"cwp-coin-volume-value\"><\/span><br \/>\n                    <!-- <span class=\"cwp-coin-trend-holder\">\n                        <span class=\"cwp-coin-trend\">?<\/span> \n                    <\/span>                     --><br \/>\n                <\/span><br \/>\n                <span class=\"cwp-coin-chart\"><br \/>\n                    <span class=\"cwp-graph-title\">Price 7d<\/span><br \/>\n                    <span class=\"cwp-graph-container\"><\/span><br \/>\n                <\/span><\/p>\n<p>            <\/span>           <\/p>\n<p>        <\/span><br \/>\n    <\/span><\/p>\n<p> block time, averaging around 12-15 seconds gave the sandwich artist a narrow but sufficient window to execute both trades. The $19,000 return reflects the extreme slippage and the attacker\u2019s ability to drain nearly all the value from the swap, leaving the trader with a tiny fraction of their purchase.<\/p>\n<p><strong>DISCOVER: <a class=\"general-link\" href=\"https:\/\/99bitcoins.com\/cryptocurrency\/best-meme-coin-icos\/\" target=\"_blank\" rel=\"noopener\">Best Meme Coin ICOs to Invest in March 2025<\/a><\/strong><\/p>\n<h2>Discussing The Crypto Sandwich Attack: How to Avoid it<\/h2>\n<p>Is this practice illegal? Sandwich attacks exploit the open nature of crypto systems rather than hacking or stealing private keys, placing them in a gray area.<\/p>\n<p>Some argue they\u2019re fair game in the Wild West of crypto. Others see them as predatory, exploiting traders who don\u2019t understand the intricacies of mempool dynamics or AMM pricing.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-215107\" src=\"https:\/\/99bitcoins.com\/wp-content\/uploads\/2025\/03\/Screenshot-2025-03-13-at-5.13.54%E2%80%AFPM.jpg\" alt=\"A USDC-USDT swap hit a trader by more than $700K thanks to a crypto sandwich artist attack. The biggest on-chain heist?\" width=\"1400\" height=\"395\"><\/p>\n<p>(<a class=\"general-link\" href=\"https:\/\/www.reddit.com\/r\/CryptoCurrency\/comments\/1j9u4ew\/crypto_trader_swaps_733000_for_just_19000_in\/?rdt=41054\" target=\"_blank\" rel=\"nofollow noopener nofollow\"><strong>source<\/strong><\/a>)<\/p>\n<p>In this case, the trader\u2019s loss was staggering, but no evidence suggests they were specifically targeted beyond being a large player in the wrong place at the wrong time.<\/p>\n<p>Sandwich attacks aren\u2019t new, but their profitability has increased as trading volumes on AMMs increase. Attackers often deploy bots to automate the process, scanning for large trades and executing the frontrun-backrun combo with minimal human intervention.<\/p>\n<p>Mitigating such attacks is challenging but possible. Traders can use lower slippage tolerances, though this risks transaction failure if prices fluctuate too fast. Alternatively, submitting trades through private mempools or relay services can obscure them from prying eyes, though this often incurs higher fees.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-215106\" src=\"https:\/\/99bitcoins.com\/wp-content\/uploads\/2025\/03\/Screenshot-2025-03-13-at-5.08.43%E2%80%AFPM.jpg\" alt=\"A USDC-USDT swap hit a trader by more than $700K thanks to a crypto sandwich artist attack. The biggest on-chain heist?\" width=\"952\" height=\"1130\"><\/p>\n<p>(<a class=\"general-link\" href=\"https:\/\/app.uniswap.org\/swap?chain=mainnet&amp;inputCurrency=NATIVE\" target=\"_blank\" rel=\"nofollow noopener nofollow\"><strong>source<\/strong><\/a>)<\/p>\n<p>Some DeFi platforms are exploring built-in protections, like dynamic slippage adjustments or anti-frontrunning mechanisms, but these remain in the early stages. For now, the burden falls on traders understanding the risks and adapting their strategies. Traders can trade safely by breaking large orders into smaller chunks or timing trades during lower network activity.<\/p>\n<p>As the space evolves, so too will the cat-and-mouse game between traders and those who prey on their moves, with each heist refining the playbook for both sides.<\/p>\n<p><strong>DISCOVER: <a class=\"general-link\" href=\"https:\/\/99bitcoins.com\/news\/self-custody-explodes-after-bybit-hack-best-wallet-slams-10-5m-raised-in-best-ico\/\" target=\"_blank\" rel=\"noopener\">Avoid Crypto Heist with Anti-Sandwich Wallet<\/a><\/strong><\/p>\n<p><a class=\"external\" href=\"https:\/\/discord.gg\/QneEHUjm\" target=\"_blank\" rel=\"noopener nofollow\"><strong>Join The 99Bitcoins News Discord Here For The Latest Market Updates<\/strong><\/a><\/p>\n<div class=\"nnbtc-key-takeaways\">\n<h3 class=\"nnbtc-key-takeaways__title\">Key Takeaways<\/h3>\n<ul class=\"nnbtc-key-takeaways__list\">\n<li class=\"nnbtc-key-takeaways__list-item\">\n        The sandwich attack\u2019s curve, a lesson to learn.    <\/li>\n<li class=\"nnbtc-key-takeaways__list-item\">\n        How to avoid sandwich artist heist attack.    <\/li>\n<\/ul><\/div>\n<p>The post <a href=\"https:\/\/99bitcoins.com\/news\/professional-sandwich-artist-rinses-crushed-trader-for-700k-in-onchain-heist\/\">Professional Sandwich Artist Rinses Crushed Trader For $700K In Onchain Heist<\/a> appeared first on <a href=\"https:\/\/99bitcoins.com\/\">99Bitcoins<\/a>.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A crypto trader recently fell victim to a sophisticated on-chain heist attack, swapping $733,000 worth of USDC for $19,000 USDT in return. This incident shows the trading systems\u2019 technical vulnerabilities and the cunning strategies employed by the crypto sandwich artist. The artist used precise timing and transaction ordering to drain the trader\u2019s funds. By taking [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":0,"footnotes":""},"categories":[2],"tags":[3,4,5],"class_list":["post-17567","post","type-post","status-publish","format-standard","hentry","category-news","tag-crypto","tag-doge","tag-news"],"_links":{"self":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/posts\/17567","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17567"}],"version-history":[{"count":0,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/posts\/17567\/revisions"}],"wp:attachment":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17567"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17567"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17567"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}