The security section is kind of boring as of now. So I'll just start bugging everyone in the privacy section then. =V I was messing around with about:config, well I'm using Pale Moon but this also should be applicable to Firefox and its derivatives. These tips have been mentioned very often, but they are sporadic and as far as I'm aware of there's no single place to gather them in one place for an easy access. So far I only have done some small configurations: Code: browser.cache.disk.enable = false browser.cache.memory.enable = false browser.send_pings = false geo.enabled = false network.dns.disableIPv6 = true network.http.sendRefererHeader = 0 If people have more info about what else needs to be configured in about:config then feel free to mention it. So anyone who wishes to harden their browser will only need to look up in one place and not missing/forgetting any manual configuration. Note: The browser.send_pings is set to "false" by default in Pale Moon. I don't know how is it in Firefox and other derivative browsers, I mentioned it just for the sake of notification. WARNING! Keep in mind that some of these tweaks may cause problems in your browsing experience. For example, network.http.sendRefererHeader set to 0 may give you problems when accessing your Outlook Mail account in your web browser. Try to set it to 1 and see if it fixes your problem.