Yes, it looks like DevMaster has been recently compromised by a security vulnerability of the forum software. We've been trying to investigate if other systems were compromised. So far, it looks like only the forums database was affected, from which the emails were obtained. The forums software has already been patched with the latest security updates.
Unfortunately, due to the popularity of the forum software we're using, such security vulnerabilities are inevitable. However, this really speaks to the importance of ensuring we regularly stay up-to-date with the software. We're going to take measures to ensure such updates are applied immediately after they're announced.
We're deeply sorry for this. In the coming months, we'll be overhauling the forum software with a custom one that better integrates with the rest of the site, which will hopefully dramatically reduce the probability of this happening again.