OurMine is basically one the two major hacking groups out there these days(the other being poodlecorp), they've hacked a ton of famous people's social media accounts from YouTubers to CEO's. With every hack they always say the same thing on the social media accounts which they hacked, "just testing your security, please contact us". With a profile that high in hacking groups these days I feel it's important to have an article on them
Some places to start with when it comes to research
http://www.digitaltrends.com/computing/ourmine-hacks-variety/
http://www.ibtimes.com/wikipedia-co-founder-jimmy-wales-twitter-account-hacked-ourmine-2404899
https://www.hackread.com/facebook-vp-adam-mosseri-twitter-hacked/
https://www.wired.com/2016/06/meet-ourmine-security-group-hacking-ceos-celebs/
https://mic.com/articles/146972/you-ve-heard-of-anonymous-now-meet-our-mine-the-hackers-targeting-the-tech-elite#.e7S4viyOU
http://thenextweb.com/google/2016/06/27/someone-just-hacked-google-ceo-sundar-pichais-quora-account/#gref
http://qz.com/700043/nobody-likes-the-hackers-who-broke-into-mark-zuckerbergs-twitter-account/
http://fortune.com/2016/07/09/jack-dorsey-ourmine-hackers/
https://mic.com/articles/146972/you-ve-heard-of-anonymous-now-meet-our-mine-the-hackers-targeting-the-tech-elite#.e7S4viyOU