Why can't I delete my cookies?

Question

I wanted to clear everything from my browsers including cookies, so I used CCleaner. It worked fine for history but i noticed that cookies were all still there. So I tried to delete them normally in Safari and Firefox ( I have a macbook pro, OS X Mountain Lion). I did, but once i clicked done they were still there. Why?? And how can I fix this? Please help.

Answer 1

There may be some site cookies which are trusted and frequently used.

You can still remove it manually like:

In Firefox go to Tools >> Options >> Privacy >> Remove individual cookies.

From here you can clear all cookies.

Answer 2

Persistent cookies may be a result of an 'Evercookie", (although I'm not absolutely certain Mac's are inclined to get these, but for what it's worth);

I call this the Jesus cookie...'cause it resurrects itself after you think it's been killed.

"a JavaScript API...evercookie does this by storing cookie data with as many local storage mechanisms as it can find. Apart from standard browser cookies there are Flash cookies, a number of local storage repositories provided by HTML 5, even in the RGB values of PNG graphics forced into the cache. On Kamkar's TODO list are Silverlight Isolated Storage and the window.name field.



The really evil part comes when evercookie finds that the user has removed any of the types of cookies in question. It then recreates them using each mechanism available." [13 in all]

Chrome's "Incognito" (private) mode manages these well. The cookie manager can't stop the cached image...

http://blogs.pcmag.com/securitywatch/2010/09/new_evercookie_claims_its_toug.php



Another thing to consider is if you are hooked up to the 'Net relative to the 'cleansing' process, and when you are re-examining for cookies.

Unless you modify the browser, it will accept all cookies, including the sometimes detrimental "3rd party" ones: usually advertising, but because of the unregulated nature of them, they can lead to malicious assets being returned.



These mod's will help constrain those cookie assets:

FIREFOX: Tools> Options> Privacy> top drop menu set to "Firefox will use custom settings..."> Check 'Accept Cookies from sites'

►Un-Check 'Accept 3rd Party cookies'.

And tick the very top box regarding "Do Not Track".



A good collection of effective add-on's (Official Mozilla) is here:

https://addons.mozilla.org/collections/dunbar-pappy/dunbarpappy/

AdBlock Plus (with 'subscription' added) helps defray rubbish.

►► At minimum, get the #1 item for malware prevention: "NoScript"**, which constrains automagically fetching & deployment of potentially tainted assets.

Bookmark and refer to this page for how it works, and how to use it when sites don't function as you need: http://noscript.net/features#contentblocking



** This also controls those "evercookie" assets.

Answer 3

Norton !! 360 >or internet security