<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RSS Feed]]></title><description><![CDATA[RSS Feed]]></description><link>https://ecency.com</link><image><url>https://ecency.com/logo512.png</url><title>RSS Feed</title><link>https://ecency.com</link></image><generator>RSS for Node</generator><lastBuildDate>Thu, 25 Jun 2026 08:00:53 GMT</lastBuildDate><atom:link href="https://ecency.com/created/doublespend/rss.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[The 51% attack against Bitcoin (and why you've gotten it wrong)]]></title><description><![CDATA[You have probably heard about the 51% attack on proof-of-work chains, like Bitcoin. Here I'm going to explain the attack vector from miners on the bitcoin network, and why most people way overestimate]]></description><link>https://ecency.com/@celestal/the-51percent-attack-against-bitcoin-and-why-youve-gotten-it-wrong</link><guid isPermaLink="true">https://ecency.com/@celestal/the-51percent-attack-against-bitcoin-and-why-youve-gotten-it-wrong</guid><category><![CDATA[hive-167922]]></category><dc:creator><![CDATA[celestal]]></dc:creator><pubDate>Wed, 01 Feb 2023 21:06:21 GMT</pubDate><enclosure url="https://i.ecency.com/p/5s4dzRwnVbzGY5ssnCE4wXzkeAEXyVtgk1ApQTwHMTp6y5PvEo1yenn8ugMFDynm6ZEUj3nWaBZTPY5tMwvfAGTUkyEsa95QP1Uev3ccBmmK9a9W2iF6N2dWoGPgSiuQFoFGxZnNqg3pshf4Qwi1AQHTzx8uVSZCpgnFDmY?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Attack on BSV: 51% Explained]]></title><description><![CDATA[Recently, Bitcoin SV (Satoshi Vision) has suffered yet another %51 attack on it's blockchain, which has caused the birth of multiple malicious sidechains, orphaned the genuine chain and it's trustworthy]]></description><link>https://ecency.com/@leonordomonol/attack-on-bsv-51-explained</link><guid isPermaLink="true">https://ecency.com/@leonordomonol/attack-on-bsv-51-explained</guid><category><![CDATA[hive-167922]]></category><dc:creator><![CDATA[leonordomonol]]></dc:creator><pubDate>Fri, 06 Aug 2021 02:31:24 GMT</pubDate><enclosure url="https://i.ecency.com/p/2bP4pJr4wVimqCWjYimXJe2cnCgnM3vXazpUUEpj694?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[SlowMist representatives are actively looking for initiators of the Ethereum Classic 51% attack]]></title><description><![CDATA[Chinese security firm SlowMist said it could soon locate the initiators of the recent 51% attacks on Ethereum Classic (ETC). In an article on Medium of January 9, SlowMist points to three wallet addresses]]></description><link>https://ecency.com/@coinatory/slowmistrepresentativesareactivelylookingforinitiatorsoftheethereumclassic51attack-9b8cmcqr7e</link><guid isPermaLink="true">https://ecency.com/@coinatory/slowmistrepresentativesareactivelylookingforinitiatorsoftheethereumclassic51attack-9b8cmcqr7e</guid><category><![CDATA[51-attack]]></category><dc:creator><![CDATA[coinatory]]></dc:creator><pubDate>Sat, 12 Jan 2019 11:50:27 GMT</pubDate><enclosure url="https://i.ecency.com/p/f85of4KXmvsQLCUd6ChsmGu1sJPfUGTQpaRQ5sq6VNmfSrCNQUEYAXvaPwZ1wRRRA6ccKfrFKHXwfAmdp27sUiE6SoVdNzRcGAzkbLgrTDpjFjXbb7829g5rKEmKf5XSvswoeFSbdczgrRxoE6NzDGB5J5L2rgsJhQNv5RPYLdZP4dea9vEJqbc8FeMW4r8io5g1spEAVL?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Easy Method to Double Your Profits - Sell the Same Card Twice!]]></title><description><![CDATA[Attention: It's possible to sell a card and then still keep it! Money for nothing and a shark for free! Now for the click-bait disclaimer: I don't actually know how to do this. But it does happen. Now]]></description><link>https://ecency.com/@mongshter/easy-method-to-double-your-profits-sell-the-same-card-twice</link><guid isPermaLink="true">https://ecency.com/@mongshter/easy-method-to-double-your-profits-sell-the-same-card-twice</guid><category><![CDATA[steemmonsters]]></category><dc:creator><![CDATA[mongshter]]></dc:creator><pubDate>Sat, 17 Nov 2018 15:24:12 GMT</pubDate><enclosure url="https://i.ecency.com/p/RGgukq5E6HBM2jscGd4Sszpv94XxHH2uqxMY9z21vaqHt1qVh7uHrcMPm6bp3yLjqwYxzHFDNdfoN8dH6wFpVNVmvi5xGps3DccAbbyHVM8BdQn2yRSsUuKiDiXnkBG?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[{Crypto} Double Spend.]]></title><description><![CDATA[Refere-se a um cenário em que alguém tenta enviar uma transação para dois destinatários diferentes ao mesmo tempo. No entanto, uma vez confirmada uma transação, torna-se quase impossível duplicá-la. Quanto]]></description><link>https://ecency.com/@joaohazim/crypto-double-spend</link><guid isPermaLink="true">https://ecency.com/@joaohazim/crypto-double-spend</guid><category><![CDATA[cryptocurrency]]></category><dc:creator><![CDATA[joaohazim]]></dc:creator><pubDate>Wed, 22 Aug 2018 11:46:57 GMT</pubDate><enclosure url="https://i.ecency.com/p/2r8F9rTBenJQfQgENfxADE6EVYabczqmSF5KeWefV5WL9W974qNRFKPXTEvca73wmoTV6xEPyBWW8Hk56MJ4HziUCZ4WFSo54MEzYTgzEuJyo2Lj72yzNAmVyG1xeSdhp?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Security Firm Identifies Potential Tether (USDT) Double Spend Bug]]></title><description><![CDATA[SlowMist, a Chinese cyber security firm has recently pointed out a transaction that should have some worried, as the user managed to double-spend the value of 694 USDT. SlowMist: User On Thursday, a blockchain]]></description><link>https://ecency.com/@ryancryptonews/security-firm-identifies-potential-tether-usdt-double-spend-bug</link><guid isPermaLink="true">https://ecency.com/@ryancryptonews/security-firm-identifies-potential-tether-usdt-double-spend-bug</guid><category><![CDATA[tether]]></category><dc:creator><![CDATA[ryancryptonews]]></dc:creator><pubDate>Sun, 01 Jul 2018 13:54:57 GMT</pubDate></item><item><title><![CDATA[Zen is Antifragile: Beyond a 51% Attack]]></title><description><![CDATA[This is a message from Rob Viglione ZenCash Co-founder and Team Lead Zen was hit by a double spend, or 51% attack, this last weekend. Criminals were able to get away with just over 23,000 ZEN from an exchange.]]></description><link>https://ecency.com/@flodner/zen-is-antifragile-beyond-a-51-attack</link><guid isPermaLink="true">https://ecency.com/@flodner/zen-is-antifragile-beyond-a-51-attack</guid><category><![CDATA[zencash]]></category><dc:creator><![CDATA[flodner]]></dc:creator><pubDate>Wed, 06 Jun 2018 18:30:45 GMT</pubDate><enclosure url="https://i.ecency.com/p/21PRtjKRXPQyg7kdubbf7hzmD1mPhjVP51braUeAsberLnTTRhpcMjbLvYz6T8cpPrk8VYcbK6GmfzV2FdjrJ4J9a6oJcdwzD6Zq1ptEXJcfnkBu1jTj6inC5i5YPsU1qbtDsyV3Ye4TWiR6nrYR4SC?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Ethereum fixes serious “eclipse” flaw that could be exploited by any kid]]></title><description><![CDATA[Developers of Ethereum, the world's No. 2 digital currency by market capitalization, have closed a serious security hole that allowed virtually anyone with an Internet connection to manipulate individual]]></description><link>https://ecency.com/@nosacapital/ethereum-fixes-serious-eclipse-flaw-that-could-be-exploited-by-any-kid</link><guid isPermaLink="true">https://ecency.com/@nosacapital/ethereum-fixes-serious-eclipse-flaw-that-could-be-exploited-by-any-kid</guid><category><![CDATA[ethereum]]></category><dc:creator><![CDATA[nosacapital]]></dc:creator><pubDate>Tue, 06 Mar 2018 22:32:39 GMT</pubDate><enclosure url="https://i.ecency.com/p/RGgukq5E6HBS5wvERDA3ZF4P2WKQy2VoZZet1QV2LNd4fTR1YzxeFTXqnZTspnBmKnabAjkB9ysLT9eWRsvkGt6TVy2TDdtagVB1CVibeGbEPfRhtUi11jhWbdhfKug?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Bitcoin Double-Spend Tool Now Available to All: Interview w/ Glass Hunts Hackers]]></title><description><![CDATA["Double-spending" Bitcoin -- the process of making someone believe you sent them funds when you didn't -- used to be only for the tech-savvy. Thanks to Glass Hunt's new web-based double-spend...]]></description><link>https://ecency.com/@artoule/bitcoin-double-spend-tool-now-available-to-all-interview-w-glass-hunts-hackers</link><guid isPermaLink="true">https://ecency.com/@artoule/bitcoin-double-spend-tool-now-available-to-all-interview-w-glass-hunts-hackers</guid><category><![CDATA[bitcoin]]></category><dc:creator><![CDATA[artoule]]></dc:creator><pubDate>Mon, 05 Mar 2018 14:24:36 GMT</pubDate></item><item><title><![CDATA[Raiblocks Security Thoughts]]></title><description><![CDATA[Raiblocks promises "unlimited scalability and no transaction fees". What about security? Potential Balance attack Cliff notes - there isn't sufficient information to claim that Raiblocks is as]]></description><link>https://ecency.com/@selfdrivingsandp/security-thoughts-on-raiblocks</link><guid isPermaLink="true">https://ecency.com/@selfdrivingsandp/security-thoughts-on-raiblocks</guid><category><![CDATA[raiblocks]]></category><dc:creator><![CDATA[selfdrivingsandp]]></dc:creator><pubDate>Thu, 28 Dec 2017 15:52:39 GMT</pubDate></item><item><title><![CDATA[First Trades With Blocktrades and Strange Message In My Wallet]]></title><description><![CDATA[I know the exchanges are down for sending steem and sbd! I really need to cash in today to get a new belt, pay my phonebill and get a vaporiser so I can quit smoking!! The only thing is I got a funny message]]></description><link>https://ecency.com/@havok777/first-trades-with-blocktrades-and-strange-message-in-my-wallet</link><guid isPermaLink="true">https://ecency.com/@havok777/first-trades-with-blocktrades-and-strange-message-in-my-wallet</guid><category><![CDATA[blocktrades]]></category><dc:creator><![CDATA[havok777]]></dc:creator><pubDate>Tue, 04 Jul 2017 15:35:39 GMT</pubDate><enclosure url="https://i.ecency.com/p/vM1pGHgNcyCiaxZmdb555hkjecmqomntNdRp7jgABLFbDTmZM7tW55hcEjMqtAMDs2NZ1HGm5sFhjzYzKZPBUeTJkjPscSQZkyWBko7noKYD4gTu3e5sW3FCyhBmBxQ31VFAe2r?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[HTML5 COIN - A Dying Sh*tcoin Revisited. Crypto Market Weirdness.]]></title><description><![CDATA[About two weeks ago I posted about a weird pump happening on the HTML5 markets. TL;DR: There was a successful doublespend attack and the coin gained 1000% just upon the promise of a fix from the developers.]]></description><link>https://ecency.com/@fraenk/html5-coin-a-dying-sh-tcoin-revisited-crypto-market-weirdness</link><guid isPermaLink="true">https://ecency.com/@fraenk/html5-coin-a-dying-sh-tcoin-revisited-crypto-market-weirdness</guid><category><![CDATA[cryptocurrency]]></category><dc:creator><![CDATA[fraenk]]></dc:creator><pubDate>Fri, 23 Jun 2017 07:00:27 GMT</pubDate><enclosure url="https://i.ecency.com/0x0/https://steemitimages.com/DQmNdHS9AnPpCmzLXWh2TkB2TggMAZ6WG9Mc8MdxAz9Uefy/image.png" length="0" type="image/png"/></item><item><title><![CDATA[HTML5 COIN - A Shitcoin with Imaginary Rocket Boosters?! 1000% gains after an almost successful 51% attack! WTF]]></title><description><![CDATA[Just a few days ago HTML5 coin experienced a 51% attack, the attack apparently was almost successful. @joshuaatiemo reported about it at the time. HTML5 Coin has been trading at the single satoshi forever.]]></description><link>https://ecency.com/@fraenk/html5-coin-a-shitcoin-with-imaginary-rocket-boosters-1000-gains-after-an-almost-successful-51-attack-wtf</link><guid isPermaLink="true">https://ecency.com/@fraenk/html5-coin-a-shitcoin-with-imaginary-rocket-boosters-1000-gains-after-an-almost-successful-51-attack-wtf</guid><category><![CDATA[cryptocurrency]]></category><dc:creator><![CDATA[fraenk]]></dc:creator><pubDate>Thu, 08 Jun 2017 12:03:30 GMT</pubDate><enclosure url="https://i.ecency.com/p/2gsjgna1uruvUuS7ndh9YqVwYGPLVszbFLwwpAYXYCsnHiHuuLvyYP8Svs3k8XHhBVcSCUjic7LoU3Ea2EJFMDNVhBbbNrPvFtGCCzaLGCjZ4HKruC?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Double-spend Attack on HTML5 coin stopped by Bleutrade]]></title><description><![CDATA[The team at Bleutrade.com exchange has been able to prevent a 51% attack on the popular crypto HTML5coin. This action by the exchanges is very encouraging. The developers are working on a fix as funds]]></description><link>https://ecency.com/@joshuaatiemo/double-spend-attack-on-html5-coin-stopped-by-bleutrade</link><guid isPermaLink="true">https://ecency.com/@joshuaatiemo/double-spend-attack-on-html5-coin-stopped-by-bleutrade</guid><category><![CDATA[hackers]]></category><dc:creator><![CDATA[joshuaatiemo]]></dc:creator><pubDate>Sat, 03 Jun 2017 21:14:27 GMT</pubDate><enclosure url="https://i.ecency.com/p/2gsjgna1uruvUuS7ndh9YqVwYGPLVszbFLwwpAYXZAdDzFbCa4p88QncgR5bp3g8A8t8yYGhUsK2MP1gCkDbJPAn4vKbjTXskMwfT29aHosWqMGwga?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Major Fuckup - Successful double spend was done in #QuatlooCoin on Bittrex - Coin to be delisted?]]></title><description><![CDATA[It finally happened, someone managed to successfully doublesped almost 80,000 QuatlooCoin on @Bittrex Exchange. From my point of view, the coin is officially DEAD until the damn shitcoin is replaced with]]></description><link>https://ecency.com/@fyrstikken/major-fuckup-successful-double-spend-was-done-in-quatloocoin-on-bittrex-coin-to-be-delisted</link><guid isPermaLink="true">https://ecency.com/@fyrstikken/major-fuckup-successful-double-spend-was-done-in-quatloocoin-on-bittrex-coin-to-be-delisted</guid><category><![CDATA[cryptocurrency]]></category><dc:creator><![CDATA[fyrstikken]]></dc:creator><pubDate>Thu, 01 Jun 2017 07:54:12 GMT</pubDate><enclosure url="https://i.ecency.com/p/D5zH9SyxCKdBnJaFeHnL3svQi9ZN2XzXDbzH7Wc9sGJD4tEnH2HYrDa87CUarr7sbiXmgjKrSWvH3GBBKCWYUbDYeGjZW18Z5kEyxWLhdBXJdrZuzdg9n7acS5ZvMqwo5krg7x?format=match&amp;mode=fit" length="0" type="false"/></item></channel></rss>