MacRumors is continually flashing up the message: Warning: Your Flash player plugin is outdated! Upgrade to continue! Safari is then redirected to: http://188.8.131.52/adobe_flashplayer_7.exe which is Non-authoritative answer: 184.108.40.206.in-addr.arpa name = b0.1c.adb8.ip4.static.sl-reverse.com. Maybe that's an adobe URL, but an .exe makes no sense. System Preferences for Flash (Yosemite 10.10.5) shows NPAPI Plug-in 220.127.116.11 and PPAPI Plug-in 18.104.22.168. I hit the "check now" and both show as being current. I also downloaded directly from the Adobe site. Not sure what "NPAPI" and "PPAPI are.