Hello Mozilla, When using Firefox I always have Enhanced Tracking Protection turned on - Custom, all four categories are checked, no exceptions are identified. Yet when I look at the Process Manager I consistently find third-parties (defined by me as NOT my OS, my browser, or any website I have visited during this session). As I write this I have just killed the following 4 processes, which I think Firefox should have caught. And in a few minutes when my active window is another application or when I take some browser tab to full-screen mode, these processes I thought I killed will reactivate. The current sample: kampyle.com setpay.com signifyd.com trustarc.com You may identify these as innocuous, but they are the very definition of third-party sites. Anything that calls itself TRUST is the first thing I'm going to question. Its exhausting having to police this constantly. What good is ETP if I have to supplement with my own time and energy, diverting me from my primary tasks? Steps taken: Before submitting this I took a moment to check all the sites I have open or have had open on this device in this browser session. Clicking on the shield near the web address field, I have confirmed EPT is ON for each of them and I can see that many trackers, etc., are apparently being blocked. I also re-checked the related Firefox settings to ensure it remains as I selected. Info: I work in remote locations, and carry my own hotspot with me. Its a cellular hotspot and I can have many devices as well as many tasks on any single device sharing the bandwidth. I started looking into this because these extra processes interfere with my use of my own devices and the bandwidth that I need and PAY FOR. Thank you for your help. -LLD