I am currently using Mac OS X El Capitan 10.11.2 on a Macbook Pro laptop. Applications I have used today are Chrome, TunnelBear (which was off at the time) and Parallels to run Windows 7. I quit Chrome and then restarted because I received an "Unable to reach Proxy" error message when trying to load a new site. The error remained. I quickly discovered that only http traffic was trying to reach the proxy and failing, but https traffic was working just fine. I went to Network Settings, Wifi, Advanced, Proxies and saw that a Proxy had been setup for 127.0.0.1 port 62123 on http only. After removing that, web traffic returned to normal.
But now the question remains, how did this happen? Is this computer compromised?
Thanks in advance for the help.