Meanwhile, in related news, Brian Krebs (the reporter who first uncovered the hack) says he has uncovered clues to the possible identity of the hacker. Krebs says he noticed the Twitter account operated by a known hacker recently posted a link to Ashley Madison's stolen proprietary source code before it was made public. Intrigued by the poster's apparent access, he examined the account's posting history and noticed a predilection for the music of Australian hard rock band AC/DC. This jibes with the behavior of the hacker(s), who had displayed threatening messages on the computers of Ashley Madison employees, accompanied by AC/DC song Thunderstruck. In a series of tweets, the owner of the account, one Thadeus Zu, appears to deny that he was behind the hack, and indeed makes several suggestions that the account itself isn't even run by one person, but is instead an amalgam of like-minded digital vigilantes. The NY Times also reports that people whose details were contained in the leak are beginning to face threats of blackmail.
Once up and running, M will be able to book restaurants for you, purchase shopping, and more. It will also be possible to use the service to ask for advice — such as looking for somewhere to visit nearby, or gift suggestions — and Facebook says the AI behind M is "trained and supervised by people".
Gavin Andresen and Mike Hearn have released Bitcoin XT, an alternative version of the core software that supports increasing the block size when required. Bitcoin users will now be forced to decide between "Bitcoin Core" and Bitcoin XT, raising the prospect of a "fork," where the digital currency divides into two competing versions. According to Price, Core and XT are compatible right now. However, if XT is adopted by 75% of users by January 2016, it will upgrade to a larger block size that will be incompatible with Core — meaning that if the other 25% don't then choose to convert, it will effectively split the currency into two. So far, 7.7% of the network has adopted XT, according to website XTnodes.com. "Ultimately, how the dispute is resolved may matter more than the specific decision that's reached," says Timothy B. Lee. "If the community is ultimately able to reach a consensus, the process could become a template for resolving future disagreements. On the other hand, if disagreements fester for months — or, worse, if a controversial software change splits the Bitcoin network into two warring camps — it could do real damage to Bitcoin's reputation."