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1

It is more insecure. Many competent web developers actually destroy the session on the server side to prevent it from ever being accessed again. For example, a PHP dev might do something like. // Unset all of the session variables. $_SESSION = array(); // If it's desired to kill the session, also delete the session cookie. // Note: This will destroy the ...


5

Logging out is supposed to expire the cookies/sessions, but that depends on the server-side coding. If the cookies were stolen and you only deleted your cookies, then the stolen cookies might still be valid. The choice of deleting vs logging out has more to do with what you are trying to defend against. Cookies contain more data than just the session ...


2

Firefox add-ons are an XPI file. You have to locate them and then just right click and extract them using tools like 7-Zip. If you can't locate the addon on your computer then just go to the download page where you can download that particular addon ---> Then right click and select save link as or save target as and save the addon file to your local disk. ...



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