WhatsApp co-founder Brian Acton left Facebook in 2017 to start a non-profit. Turns out that non-profit involves another messaging app: Signal. In a blog post, Signal chief Moxie Marlinspike has announced the launch of Signal Foundation, a 501(c)(3) nonprofit that was made possible by the $50,000,000 in funding Acton provided. Signal's secure messaging app is a popular choice among privacy-focused users, including staff members of the US Senate. Even though it's a fairly recognizable name, it's been having financial troubles that make it hard to hire more people to develop new features.