Mt. Gox Launched
Happened on July 18th, 2010Mt. Gox was a bitcoin exchange based in Shibuya, Tokyo, Japan. Launched in 2010, it was handling over 70% of all bitcoin (BTC) transactions worldwide by early 2014, when it abruptly ceased operations amid revelations of its involvement in the loss/theft of hundreds of thousands of bitcoins, then worth hundreds of millions in US dollars. In July 2010, McCaleb read about bitcoin on Slashdot, and decided that the bitcoin community needed an exchange for trading bitcoin and regular currencies. On 18 July, Mt. Gox launched its exchange and price quoting service deploying it on the spare mtgox.com domain name.
- — nothing documented for 2 years —
BTC-e Attacked
Happened on July 31st, 2012A moderator of the chat at BTC-e known as “Dev” indicates that a malicious entity was able to deposit fake Liberty Reserve funds, and use them to purchase Bitcoins. BTC-e officially confirms that their Liberty Reserve API key was compromised, leading to the falsification of funds on the exchange. Approximately 4,500 bitcoins were actually withdrawn and stolen by the attacker.
- — nothing documented for 3 years —
Ethereum Launches
Happened on July 30th, 2015Frontier marks the first official Ethereum release, “Ethereum 1.0.” The launch consisted of a Genesis block, which included 8893 transactions of everyone who bought Ether during the official presale. In total, a little over 72 million ETH was “pre-mined,” of which almost 12 million was allocated for the Ethereum development fund.
DAO Fork
Happened on July 20th, 2016On June 17th, 2016, a vulnerability found inside the DAO contract had been exploited to drain approximately 3.6 million ETH from the fund. Due to the way this contract was designed, these funds would be frozen for 28 days before they could be transferred. If no action would have been taken, the attacker would single-handedly have owned around 4.4% of the total supply of ETH. Because of this, a controversial proposal (EIP 779) was drawn up in order to change the code of the attacker’s lockup contract so everyone would be able to withdraw their ETH from the DAO contract. On July 20th, a majority of mining power supported a fork which implemented this change, while a smaller community decided to split off and rename the old chain to Ethereum Classic.
Parity Multsig Wallet v1.5 Hacked
Happened on July 19th, 2017The second largest hack (in terms of ETH stolen) in the history of the Ethereum network happened today. A total of 153,037ETH was stolen from three high-profile multi-signature contracts used to store funds from past ICO/token sales. https://blog.openzeppelin.com/on-the-parity-wallet-multisig-hack-405a8c12e8f7/