{"id":4720,"date":"2020-11-22T23:24:31","date_gmt":"2020-11-22T20:24:31","guid":{"rendered":"https:\/\/alfacash.blog\/?p=4720"},"modified":"2024-02-19T21:52:50","modified_gmt":"2024-02-19T18:52:50","slug":"defi-protocol-pickle-finance-relevant-19m-hack-loses-value","status":"publish","type":"post","link":"https:\/\/alfacash.blog\/pt\/2020\/11\/22\/defi-protocol-pickle-finance-relevant-19m-hack-loses-value\/","title":{"rendered":"O protocolo DeFi Pickle Finance sofreu um hack de $19.7M e perde valor"},"content":{"rendered":"<p>Devemos admitir que o pequeno mundo DeFi \u00e9 bastante selvagem, e ainda existem alguns golpes e hacks aqui e ali. Agora o pior \u00e9 para Pickle Finance, uma plataforma baseada em Ethereum para produ\u00e7\u00e3o agr\u00edcola que<strong> acabou de ser hackeado, com cerca de 19,7 milh\u00f5es de d\u00f3lares roubados no \u00faltimo dia 21 de novembro.<\/strong><\/p>\n\n\n\n<p>Pickle Finance nasceu <a href=\"https:\/\/alfacash.blog\/2020\/09\/22\/what-happened-september-cryptocurrency-world\/\" target=\"_blank\" rel=\"noreferrer noopener\">setembro passado<\/a>, oferecendo aos seus Provedores de Liquidez (produtores de rendimento) para apostar alguns ETH e stablecoins para obter seu token nativo, o PICKLE, como recompensa. O rendimento percentual anual prometido (APY) ascendeu a 1.432%, mas isso seria dif\u00edcil com as falhas descobertas.<\/p>\n\n\n\n<p>De acordo com <a href=\"https:\/\/picklefinance.medium.com\/pickle-was-hacked-and-there-has-been-a-loss-of-funds-414b99969c29\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">uma postagem de blog<\/a> pela equipe da Pickle Finance, o pDAI PickleJar foi o contrato afetado, de onde foram drenados 19.759.355 DAI. O ataque foi muito sofisticado e aproveitado em algumas falhas de design e principalmente em um recurso que permite trocas diretas entre Jars (cofres).<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"665\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-1024x665.jpg\" alt=\"\" class=\"wp-image-4234\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-1024x665.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-300x195.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-150x97.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-18x12.jpg 18w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-270x175.jpg 270w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-770x500.jpg 770w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-782x508.jpg 782w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-793x515.jpg 793w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-370x240.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-554x360.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-306x199.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-260x169.jpg 260w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280-87x56.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/10\/hacker-2851143_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p>Imediatamente ap\u00f3s o ataque ao <a href=\"https:\/\/alfacash.blog\/2020\/09\/09\/how-to-make-thousands-dollars-defi\/\" target=\"_blank\" rel=\"noreferrer noopener\">Protocolo DeFi<\/a>, <strong>a equipe juntou for\u00e7as com alguns hackers de chap\u00e9u branco para descobrir o assunto<\/strong>. Eles levaram muitas horas para descobrir e replicar como exatamente o ataque foi feito porque era muito complexo. Eles declararam sobre isso:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u201cA primeira etapa foi fazer a engenharia reversa da transa\u00e7\u00e3o e ver se podemos escrever o c\u00f3digo para replicar o ataque. Depois de muitas horas, a equipe (agora totalizando mais de 10 pessoas) finalmente descobriu como foi executado (...) Esse foi um ataque muito complicado e envolveu muitos componentes do protocolo Pickle. A partir de agora, n\u00e3o parece que quaisquer outros fundos estejam em risco \u201d.<\/p><\/blockquote>\n\n\n\n<p>A equipe conseguiu corrigir a vulnerabilidade com sucesso. No entanto, eles estavam perguntando a <a href=\"https:\/\/alfacash.blog\/2020\/10\/07\/meet-best-performing-bold-platforms-yield-farming\/\" target=\"_blank\" rel=\"noreferrer noopener\">produtores de rendimento<\/a> para retirar seus fundos daquele Jar espec\u00edfico e interromper os dep\u00f3sitos tamb\u00e9m. Os outros frascos n\u00e3o foram afetados, portanto, podem ser usados com seguran\u00e7a.<\/p>\n\n\n\n<p>Apesar de todos os esfor\u00e7os, <strong>O pre\u00e7o da PICKLE sofreu as consequ\u00eancias ao perder cerca de 65% de seu valor<\/strong>. Desde o incidente, ele se recuperou um pouco, mas ainda est\u00e1 abaixo do pre\u00e7o original.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Mais hacks<\/strong><\/h2>\n\n\n\n<p>Antes deste, o protocolo de empr\u00e9stimo e economia DeFi Akropolis, baseado em Ethereum, <a href=\"https:\/\/akropolis.substack.com\/p\/delphi-savings-pool-exploit?r=1qvfn&amp;utm_campaign=post&amp;utm_medium=web&amp;utm_source=copy\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">foi hackeado tamb\u00e9m<\/a>. O invasor desviou 2 milh\u00f5es de d\u00f3lares em DAI de seus pools Ycurve e sUSD em 12 de novembro. Isso aconteceu apesar das duas auditorias no protocolo por duas empresas diferentes. Aparentemente, o hacker encontrou <a href=\"https:\/\/alfacash.blog\/2020\/10\/04\/malware-can-steal-cryptos-how-avoid-it\/\" target=\"_blank\" rel=\"noreferrer noopener\">exploits ainda n\u00e3o descobertos<\/a> nos empr\u00e9stimos flash.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"797\" src=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-1024x797.jpg\" alt=\"\" class=\"wp-image-4726\" srcset=\"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-1024x797.jpg 1024w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-300x233.jpg 300w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-150x117.jpg 150w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-15x12.jpg 15w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-231x180.jpg 231w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-662x515.jpg 662w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-653x508.jpg 653w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-370x288.jpg 370w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-554x431.jpg 554w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-306x238.jpg 306w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-315x245.jpg 315w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-257x200.jpg 257w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280-87x67.jpg 87w, https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/bug-4297771_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Imagem de JohnArtsz do Pixabay<\/figcaption><\/figure><\/div>\n\n\n\n<p>Infelizmente, Pickle Finance e Akropolis n\u00e3o est\u00e3o sozinhas. <a href=\"https:\/\/alfacash.blog\/2020\/10\/29\/what-happened-october-in-cryptocurrency-world\/\" target=\"_blank\" rel=\"noreferrer noopener\">No final de outubro<\/a>, o popular Harvest Finance tamb\u00e9m foi hackeado, e dessa vez com um n\u00famero maior: <strong>$24M foram desviados de seus cofres USDC e USDT<\/strong>. O pre\u00e7o de seu token nativo, FARM, despencou em 62,2% e ainda n\u00e3o se recuperou.<\/p>\n\n\n\n<p>Parece que os hacks do DeFi est\u00e3o se tornando comuns, especialmente no Ethereum. Este blockchain <a href=\"https:\/\/alfacash.blog\/2020\/11\/14\/ethereum-2-new-features-prices-more-ethereum-chains\/\" target=\"_blank\" rel=\"noreferrer noopener\">est\u00e1 em processo<\/a> mudar e melhorar todo o seu sistema, mas ainda teremos que esperar alguns anos para ver isso. &nbsp;&nbsp;<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><em>Imagem apresentada por Andreas G\u00f6llner \/ Pixabay<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p class=\"has-text-align-center\"><em>Quer negociar BTC, ETH e outros tokens? Voc\u00ea consegue<\/em>\u00a0<em>com seguran\u00e7a\u00a0<a href=\"https:\/\/www.alfa.cash\/buy\/bitcoin\" target=\"_blank\" rel=\"noreferrer noopener\">em Alfacash<\/a>! E n\u00e3o se esque\u00e7a de que estamos falando sobre isso e muitas outras coisas em nossas redes sociais.<br><br><\/em><a href=\"https:\/\/twitter.com\/alfacash_crypto\" target=\"_blank\" rel=\"noreferrer noopener\">Twitter<\/a>\u00a0*\u00a0<a href=\"https:\/\/t.me\/AlfacashCommunity\" target=\"_blank\" rel=\"noreferrer noopener\">Telegrama<\/a>\u00a0*\u00a0<a href=\"https:\/\/www.instagram.com\/alfacashstore\" target=\"_blank\" rel=\"noreferrer noopener\">Instagram<\/a> * <a href=\"https:\/\/www.youtube.com\/channel\/UCOl4fdRHj8AseQ5b6z9udaw\" target=\"_blank\" rel=\"noreferrer noopener\">YouTube<\/a>\u00a0*<a href=\"https:\/\/www.facebook.com\/alfacashstore\" target=\"_blank\" rel=\"noreferrer noopener\">Facebook<\/a>\u00a0\u00a0*\u00a0<a href=\"https:\/\/vk.com\/alfacashcrypto\" target=\"_blank\" rel=\"noreferrer noopener\">Vkontakte<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Depois de apenas dois meses, o Pickle Finance foi hackeado e $19.7M foi desviado de seu DAI Jar. O pre\u00e7o caiu e n\u00e3o est\u00e1 sozinho. <\/p>","protected":false},"author":5,"featured_media":4724,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[47],"tags":[84,107,186,69,93,123],"class_list":{"0":"post-4720","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-market-trends-alfacash","8":"tag-defi","9":"tag-ethereum","10":"tag-hack","11":"tag-prices","12":"tag-tokens","13":"tag-yield-farming"},"featured_image_src":"https:\/\/alfacash.blog\/wp-content\/uploads\/2020\/11\/pickled-gherkin-4757080_1280-scaled.jpg","author_info":{"display_name":"Isabel P\u00e9rez","author_link":"https:\/\/alfacash.blog\/pt\/author\/isabel\/"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v25.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DeFi protocol Pickle Finance suffered a $19.7M hack and loses value - alfa.cash blog<\/title>\n<meta name=\"description\" content=\"After barely two months around, Pickle Finance was hacked, and $19.7M was siphoned from its DAI Jar. 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