47.Slack

Slack (software)

Slack is a cloud-based team collaboration tool co-founded by Stewart Butterfield, Eric Costello, Cal Henderson, and Serguei Mourachov.[1] Slack began as an internal tool used by their company, Tiny Speck, in the development of Glitch, a now defunct online game.
History

Slack was launched in August 2013.[14]

In January 2015, Slack announced the acquisition of Screenhero, which will be integrated into the Slack software to add voice, video, and screen sharing.[15]

In March 2015, Slack announced that it was hacked over the course of four days in February 2015, and that some number of users’ data was compromised. That data included email addresses, usernames, encrypted passwords, and, in some cases, phone numbers and Skype IDs that users had associated with their accounts. In response, Slack added two-factor authentication to their service.
Stewart Butterfield

Daniel Stewart Butterfield (born 1973) is a Canadian entrepreneur and businessman, best known for being a co-founder of the photo sharing website Flickr and team messaging application Slack.
Early life and education

Butterfield was born in Lund, British Columbia in 1973.[1] He was educated at St. Michaels University School in Victoria, British Columbia. He received a B.A. degree in philosophy from the University of Victoria in 1996.[2] Butterfield went on to earn a Master of Philosophy from the University of Cambridge in 1998, where he specialized in the philosophy of biology, cognitive science, and the philosophy of mind.