How A Security Vulnerability Affected Ethereum And Led To A Chain Split

During security testing a vulnerability was exposed on the Authy app, a two-factor authentication tool. Less than 0.2% of Authy users were affected. An outside security research team discovered the vulnerability which affects users who changed the phone number on Authy accounts since February 2014. The users affected were no longer able to access their original phone and so thus had to prove phone ownership. This process included government issued ID’s. Authy immediately moved to patch the vulnerability and has no evidence the vulnerability was exploited by nefarious characters. Authy sent....

According to a number of third party infrastructure providers, the Ethereum blockchain suffered an unintended hard fork or chain split on Wednesday. The service providers Infura, Binance, and Blockchair all reported issues with consensus at block height 11,234,873. The cryptocurrency community has been discussing an unintended chain split that took place on the Ethereum blockchain on Wednesday, November 11, 2020. Three major third-party service providers Infra, Binance, and Blockchair all reported on the issues with Ethereum at around 5 a.m. (EST). A number of cryptocurrency community....

“Stay away from doing [transactions] for a while till confirmed, unless you are sure you are submitting to latest Geth,” advised Andre Cronje. A major consensus bug has affected more than half the Ethereum network’s nodes, causing those running older versions of Geth to split from the main network.According to Ethereum software developer Marius van der Wijden, an attacker exploited a vulnerability affecting earlier versions of Geth, one of Ethereum's software clients. According to the developer, Geth clients and Ethereum nodes running software v1.10.7 or earlier are at risk of splitting....

Owing to a security vulnerability in six tokens, Multichain users lost more than $3M over the week. A white hat hacker returned 322 ETH, but in excess of 527 ETH is still exploited. In a dramatic twist, one of this week’s Multichain hackers has returned 322 ETH ($974,000 at the time of writing) to the cross-chain router protocol and one of the affected users.However the hacker kept 62 ETH ($187,000) as a “bug bounty”, and a total of 528 ETH (worth $1.6M) remains outstanding after the exploits. Earlier this week, news emerged of a security vulnerability with Multichain relating to the....

Since January 3, 2009, the Bitcoin network has been functional for 99.98662952015% of the time. However, the protocol has had a few hiccups along the way and on a few occasions, the chain split into two. Most people are well aware of the Bitcoin Cash split that took place on August 1, 2017, but the first time the Bitcoin chain split was 11 years ago on August 15, 2010. Strange Block 74,638 4,019 days ago on August 15, 2010, the Bitcoin community had a problem which was dubbed the “overflow bug.” What was also called a “malicious event” or “Strange block....