I've read dozens of articles about evercookies. Not one described how to identify one - what do they look like? For those saying, "I've never heard of evercookies," (neither had I), see links below. I visited Bruce Schneier's site - articles about evercookies. He says one (non tracking) is placed on visitors' computers (unless they have browser configured / addons / java script disabled), that prevent evercookies. Unless he's joking, I can't find anything, but not sure exactly what to look for. From what I've read, they can take many forms & be "stored in several locations." Schneier's article mentions "locations" https://www.schneier.com/blog/archives/2010/09/evercookies.html Standard HTTP Cookies Local Shared Objects (Flash Cookies) Storing cookies in RGB values of auto-generated, force-cached PNGs using HTML5 Canvas tag to read pixels (cookies) back out Storing cookies in Web History (seriously. see FAQ) HTML5 Session Storage HTML5 Local Storage HTML5 Global Storage HTML5 Database Storage via SQLite For recent FF versions, I was under impression HTML5 data (DOM storage) was stored in webappstore.sqlite in the profile. If the (4) HTML5 storages are in diff locations than webappstore, where are they? I have ALL cookies disabled globally, but do have JS enabled. Disabling cookies isn't supposed to prevent evercookies. Have no addons claiming to block evercookies. How do I identify an evercookie - for testing purposes? BTW, I use a non-default profile location on a separate partition. Cleaning evercookies (if I ever identify them): I've read every solution imaginable - like anecdotal cures for a cold. BleachBit says will clean them, BUT DOES NOT detect FF profiles in non-default locations. CCleaner detects profiles in non-default locations, but AFAIK, doesn't clean evercookies. Some suggest using No Script, turn off java script & just allowing / whitelisting sites as needed. I've used it & is included in Tor Browser, but it's not a simple addon, even for me. Creates probs occasionally. So, any advice how I can identify evercookies & how to clean them, if using non-default profile location? I'm not surprised if readers haven't heard of it, though if one searches, there's plenty of info. These are just a few articles about evercookies. !st link has info about research on how many web sites were using this technology. http://ashkansoltani.org/docs/respawn_redux.html https://en.wikipedia.org/wiki/Evercookie https://www.schneier.com/blog/archives/2010/09/evercookies.html https://www.schneier.com/blog/archives/2011/08/new_undeletable.html http://www.ghacks.net/2010/11/05/evercookie-extremely-persistent-cookies/ https://threatpost.com/en_us/blogs/evercookie-creator-ftc-cookie-inquiry-would-be-too-narrow-100511 http://www.techrepublic.com/blog/se...-the-cookie-wars-fighting-the-evercookie/4672 Thanks.