The dock of my iMac has a 2nd FireFox icon that says "Firefox from iPhone4" when I don't have one

[Baltimike]

I don't have nor have I ever had an iPhone 4.

I tried rebooting, it went away, but then came back.

Not gonna lie, I am a little freaked out

[Tetrachloride]

1. try to do a right click and Show

show app or show original file

lets see where this is from

if you find it, do a Get Info

[Baltimike]

3. when I right clicked, it disappeared. nt

[bucolic_frolic]

2. I bet that rogue browser belongs to Elmo

[Anarcho-Socialist]

4. check where your Apple ID is being used

Go to System Settings > Apple ID

Then have a look at the devices list. If there are any devices you do not recognise then select it and remove from your account.

[Baltimike]

6. I have three devices listed, and they are all mine and accurate.

This is just dismaying in a sense

[Tetrachloride]

5. turn off HANDoff if you can

[Baltimike]

7. where is HAND off? I can't find it. nt

[Baltimike]

8. When I click on the icon, it disappears.

and then comes back after a while