Through today, portProxy.bin has been eating up my CPU, constantly using about 60% and making the fans in my computer whizz up.

I'm guessing it might be connected to my VPN use, but now I haven't been running any VPNs for some hours and portProxy has still been staying at around 60% CPU usage.

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I use Cisco AnyConnect to access my schools private network and Disconnect to block trackers and hide my location. Sometimes I forget to disable Disconnect before trying to connect through Cisco AnyConnect, but then AnyConnect can establish a connection and I'm reminded I have Disconnect running. Could this have something to do with it?

Thank you.

  • 1
    Im guessing that you havent fully quit the vpn app. Try killing the process by clicking it then pressing the x button in activity monitor, right under the close tab button and the minimize button (top left) Commented Mar 29, 2018 at 19:15

1 Answer 1


I haven't figured out what portProxy.bin is or why it was hogging my CPU, so if you know this, please edit and replace this text with an explanation.

I did a restart and that corrected the problem.

  • Note to self: Always do a restart before posting to Q/A forums...
    – ssssaaaa
    Commented Mar 29, 2018 at 14:54

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