It seems there was a concerted effort to take over the meetup.com group where the hijacker joined with two profiles in two steps with a clear intent of a hostil

It seems there was a concerted effort to take over the meetup.com group where the hijacker joined with two profiles in two steps with a clear intent of a hostile takeover. First they joined with one (profile X) to listen in, then a second (profile Y) with the same name when the group was about to expire. Then profile Y "stepped up" to take over the group and delegated org status to profile X too. They then later removed profile X completely, leaving only Y (all the time profile X and Y identically named, identically looking) as the organizer. The timing of the events as observed seem to support this thesis. (Update). Doing some testing, we also found it quite easy to find expiring meetup.com groups in public, e.g. https://www.google.com/search?q=%22This+Meetup+no+longer+has+an+Organizer.+Without+an+Organizer%2C+it+will+disappear+from+our+website+in+15+day(s).%22&oq=%22This+Meetup+no+longer+has+an+Organizer.+Without+an+Organizer%2C+it+will+disappear+from+our+website+in+15+day(s).%22&aqs=chrome.0.57.1283&sugexp=chrome,mod=14&sourceid=chrome&ie=UTF-8#hl=en&sclient=psy-ab&q=site:meetup.com+%22This+Meetup+no+longer+has+an+Organizer%22&oq=site:meetup.com+%22This+Meetup+no+longer+has+an+Organizer%22&gs_l=serp.3...6015.6015.3.6993.1.1.0.0.0.0.82.82.1.1.0.les%3B..0.0...1c.1.t0LgJRIbgAU&pbx=1&fp=1&bpcl=37643589&biw=1440&bih=760&bav=on.2,or.r_gc.r_pw.r_cp.r_qf.&cad=b&sei=gOCaUIaaDcGa0QWTlIEI https://www.google.com/search?q=%22This+Meetup+no+longer+has...