{"id":120966,"date":"2026-06-05T11:50:04","date_gmt":"2026-06-05T10:50:04","guid":{"rendered":"https:\/\/investx.fr\/pt\/uncategorized\/zec-colapsa-38-zcash-falha-critica-falsificar-tokens\/"},"modified":"2026-06-05T11:50:07","modified_gmt":"2026-06-05T10:50:07","slug":"zec-colapsa-38-zcash-falha-critica-falsificar-tokens","status":"publish","type":"post","link":"https:\/\/investx.fr\/pt\/noticias-cripto\/zec-colapsa-38-zcash-falha-critica-falsificar-tokens\/","title":{"rendered":"ZEC colapsa 38%: Zcash revela falha cr\u00edtica que permitia falsificar tokens"},"content":{"rendered":"\n<p>Uma vulnerabilidade considerada \u00ab<strong>cr\u00edtica<\/strong>\u00bb acaba de ser divulgada publicamente pela equipa da <strong>Zcash<\/strong>. A falha afetava diretamente o <strong>protocolo de privacidade<\/strong> da rede e poderia ter permitido a um atacante criar <strong>ZEC<\/strong> do nada, sem nunca ser detetado.<\/p>\n\n\n\n<p>O mercado n\u00e3o tardou a reagir: o pre\u00e7o do <strong>ZEC<\/strong> afundou <strong>38%<\/strong> em poucas horas, apagando semanas de valoriza\u00e7\u00e3o e reacendendo as d\u00favidas sobre a viabilidade das <strong>privacy coins<\/strong> a grande escala.<\/p>\n\n\n\n<p>Por detr\u00e1s deste an\u00fancio esconde-se uma quest\u00e3o muito mais profunda \u2014 a da <strong>confian\u00e7a<\/strong> que se pode depositar em <strong>sistemas criptogr\u00e1ficos<\/strong> cuja pr\u00f3pria complexidade constitui a principal superf\u00edcie de ataque.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"uma-falha-no-coracao-do-pool-orchard-a-privacidade-voltada-contra-si-mesma\">Uma falha no cora\u00e7\u00e3o do pool Orchard: a privacidade voltada contra si mesma<\/h2>\n\n\n\n<p>O protocolo <strong>Orchard<\/strong> \u00e9 o componente mais recente do sistema de transa\u00e7\u00f5es blindadas (<em>shielded<\/em>) da <strong>Zcash<\/strong>. Baseia-se em <strong><a href=\"https:\/\/investx.fr\/comprendre-cryptomonnaie\/lexique-crypto\/\">provas de conhecimento zero<\/a><\/strong> (<em>zero-knowledge proofs<\/em>) para garantir a confidencialidade total das transa\u00e7\u00f5es. Foi precisamente neste mecanismo que foi identificada uma vulnerabilidade cr\u00edtica.<\/p>\n\n\n\n<p>De acordo com a divulga\u00e7\u00e3o oficial, a falha permitia a um agente malicioso <strong>gerar ZEC fict\u00edcios no pool Orchard sem que a rede o pudesse detetar<\/strong>. Por outras palavras, era teoricamente poss\u00edvel <strong>aumentar a oferta em circula\u00e7\u00e3o<\/strong> de forma invis\u00edvel, contornando um dos princ\u00edpios fundamentais de qualquer <strong><a href=\"https:\/\/investx.fr\/comprendre-cryptomoeda\/crypto\/\">criptomoeda<\/a><\/strong>: a <strong>verificabilidade da emiss\u00e3o<\/strong>.<\/p>\n\n\n\n<p>Este tipo de vulnerabilidade \u00e9 particularmente temido no ecossistema cripto. Uma <strong>infla\u00e7\u00e3o silenciosa da oferta<\/strong> \u2014 mesmo que n\u00e3o explorada \u2014 \u00e9 suficiente para corroer a confian\u00e7a num ativo. A boa not\u00edcia: a equipa da <strong>Zcash<\/strong> afirma que a falha foi corrigida antes de qualquer explora\u00e7\u00e3o conhecida, e que uma auditoria confirmou a aus\u00eancia de abusos na cadeia.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\">\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/media.investx.fr\/wp-content\/uploads\/sites\/2\/2026\/06\/05124635\/chart-zcash-24h-1780656393.png\" alt=\"Gr\u00e1fico Zcash 1 dia\"\/><\/figure>\n\n\n\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"menos-38-em-poucas-horas-o-mercado-pune-severamente-a-transparencia\">-38% em poucas horas: o mercado pune severamente a transpar\u00eancia<\/h2>\n\n\n\n<p>A rea\u00e7\u00e3o do mercado foi imediata e brutal. O <strong>ZEC<\/strong> perdeu <strong>38% do seu valor<\/strong> nas horas seguintes \u00e0 publica\u00e7\u00e3o da divulga\u00e7\u00e3o, registando uma das piores sess\u00f5es dos \u00faltimos meses. Os <strong>volumes de negocia\u00e7\u00e3o<\/strong> dispararam em alta, sinal de uma liquida\u00e7\u00e3o massiva de posi\u00e7\u00f5es e de uma fuga dos investidores para ativos percebidos como menos arriscados.<\/p>\n\n\n\n<p>Do ponto de vista t\u00e9cnico, o <strong>ZEC<\/strong> quebrou v\u00e1rios <strong>n\u00edveis de suporte<\/strong> chave em candlestick, sem encontrar compradores significativos para amortizar a queda. O <strong>sentimento de mercado<\/strong> entrou em territ\u00f3rio fortemente baixista, com um <a href=\"https:\/\/investx.fr\/comprendre-cryptomoeda\/fear-and-greed-index\/\"><em>Fear &#038; Greed<\/em><\/a> espec\u00edfico do ativo pr\u00f3ximo de n\u00edveis extremos. A resist\u00eancia \u00e0 recupera\u00e7\u00e3o situa-se agora bem acima das cota\u00e7\u00f5es atuais, tornando qualquer recupera\u00e7\u00e3o t\u00e9cnica a curto prazo dif\u00edcil de sustentar.<\/p>\n\n\n\n<p>Paradoxalmente, alguns observadores salientam que a decis\u00e3o da <strong>Zcash<\/strong> de <strong>divulgar publicamente a falha<\/strong> em vez de a ocultar demonstra uma maturidade operacional real. Mas num mercado onde a confian\u00e7a se constr\u00f3i ao longo de anos e se destr\u00f3i em poucos minutos, esta transpar\u00eancia n\u00e3o foi suficiente para travar o p\u00e2nico.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"privacy-coins-sob-pressao-um-modelo-de-confianca-a-reconstruir\">Privacy coins sob press\u00e3o: um modelo de confian\u00e7a a reconstruir<\/h2>\n\n\n\n<p>Este incidente relan\u00e7a um debate estrutural em torno das <strong><a href=\"https:\/\/investx.fr\/pt\/aprender-criptomoedas\/cripto\/monero\/\">criptomoedas focadas na privacidade<\/a><\/strong>. <a href=\"https:\/\/investx.fr\/comprendre-cryptomoeda\/crypto\/monero\/\"><strong>Monero (XMR)<\/strong><\/a>, <strong>Zcash (ZEC)<\/strong> e <strong>Dash<\/strong> assentam em <strong>constru\u00e7\u00f5es criptogr\u00e1ficas avan\u00e7adas<\/strong> \u2014 e \u00e9 precisamente essa complexidade que as torna vulner\u00e1veis a falhas dif\u00edceis de detetar, mesmo para equipas de engenheiros de alto n\u00edvel.<\/p>\n\n\n\n<p>A descoberta de uma vulnerabilidade desta natureza no pool <strong>Orchard<\/strong> levanta uma quest\u00e3o leg\u00edtima: <strong>quantas falhas semelhantes permanecem ainda por detetar<\/strong> noutros <strong>protocolos de privacidade<\/strong>? As <strong>zero-knowledge proofs<\/strong>, apesar das suas robustas propriedades matem\u00e1ticas, n\u00e3o s\u00e3o imunes a erros de implementa\u00e7\u00e3o. Foi a implementa\u00e7\u00e3o, e n\u00e3o a teoria, que falhou aqui.<\/p>\n\n\n\n<p>Para a <strong>Zcash<\/strong>, o desafio das pr\u00f3ximas semanas ser\u00e1 <strong>restaurar a confian\u00e7a<\/strong> dos programadores e dos detentores institucionais. A publica\u00e7\u00e3o de um <strong>relat\u00f3rio de auditoria completo<\/strong>, de um <strong>post-mortem detalhado<\/strong> e de um <strong><a href=\"https:\/\/investx.fr\/pt\/noticias-cripto\/zcash-hard-fork-emergencia-falha-orchard\/\">calend\u00e1rio de refor\u00e7o do protocolo<\/a><\/strong> ser\u00e1 determinante para estabilizar a cota\u00e7\u00e3o e evitar que este epis\u00f3dio se torne um ponto de viragem definitivo para o ecossistema das <strong>privacy coins<\/strong>.<\/p>\n\n\n\n<div class=\"related-articles\">\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"artigos-relacionados\">Artigos relacionados :<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/investx.fr\/pt\/noticias-cripto\/bitcoin-eth-xrp-sol-dados-opcoes-crash\/\">Bitcoin, ETH, XRP, SOL: os dados das op\u00e7\u00f5es sinalizam um crash ainda mais profundo?<\/a><\/li>\n<li><a href=\"https:\/\/investx.fr\/pt\/noticias-cripto\/strategy-grayscale-alerta-stress-test-modelo-bitcoin\/\">O modelo Bitcoin alavancado da Strategy enfrenta o seu primeiro stress test, segundo a Grayscale<\/a><\/li>\n<li><a href=\"https:\/\/investx.fr\/pt\/noticias-cripto\/bitcoin-queda-13-saylor-rotacao-capitais-ia\/\">Bitcoin cai 13%: Saylor aponta a rota\u00e7\u00e3o de capitais para a IA<\/a><\/li>\n<\/ul>\n\n\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A Zcash revelou uma vulnerabilidade cr\u00edtica no protocolo Orchard que permitia criar ZEC do nada. O mercado reagiu com uma queda brutal de 38% em poucas horas.<\/p>\n","protected":false},"author":47,"featured_media":120731,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","faq_titre":"","questions_frequentes":"","custom_permalink":"noticias-cripto\/zec-colapsa-38-zcash-falha-critica-falsificar-tokens"},"categories":[44,6],"tags":[],"class_list":["post-120966","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-altcoins","category-noticias-cripto"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ZEC cai 38% ap\u00f3s falha cr\u00edtica descoberta na Zcash<\/title>\n<meta name=\"description\" content=\"A Zcash revelou uma vulnerabilidade cr\u00edtica no protocolo Orchard que permitia criar ZEC do nada. 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