How to use browser settings to disable cookies

Chrome
Open Chrome
Click the Chrome menu on the browser toolbar (next to the search window).
Select Settings
Click Show advanced settings
In the "Privacy" section, click the Content settings button
In the "Cookies" section, you can change the following cookie settings:
Allow local data to be set
Keep cookies and site data until you quit your browser
Block sites from setting cookies
Block third-party cookies and website data
Make exceptions for cookies from specific websites
Delete one or all cookies
For further information, visit the relative page.

Mozilla Firefox
Open Mozilla Firefox
Click the menu button on the browser toolbar (next to the search window).
Choose Options
Click the Privacy tab.
Use custom settings for history.
In the "Privacy" section, click the Content settings button
In the "Tracking" section, you can change the following cookie settings:
Tell sites that I do not want to be tracked
Tell sites that I want to be tracked
Do not tell sites anything about my tracking preferences
In the "History" section it is possible to:
Enable "Use custom settings for history" and select to accept third-party cookies ("Always" from the most frequently visited websites or "Never") and to keep them for a set time (until they expire, until Firefox is closed or to ask each time).
Delete individual stored cookies
For further information, visit the relative page.

Internet Explorer
Open Internet Explorer
Click the Tools button and select Internet Options
Click the Privacy tab and in the "Settings" move the slider depending on the action you wish to select for cookies:
Block all cookies
Allow all cookies
Select sites from which to obtain cookies: move the slider to an intermediate position so as not to block or allow all cookies, then click Sites, in the Website Address Field, enter the website and then click Block or Allow.
For further information, visit the relative page.

Safari 6
Open Safari
Click Safari, select Preferences and click Privacy
In the Block Cookies section specify how you want Safari to accept cookies from Internet sites.
To see which sites have stored cookies click Details
For further information, visit the relative page.

Safari iOS (mobile devices)
Open Safari iOS
Tap Settings then Safari.
Tap on Block Cookies and select one of the following options: "Never", "From Third-Parties and advertisers" or "Always"
To delete all cookies stored by Safari, tap Settings then on Safari and finally on Delete Cookies and Website Data
For further information, visit the relative page.

Opera
Open Opera
Click Preferences then Advanced and finally Cookies
Choose one of the following options:
Accept all cookies
Accepts cookies only from websites visited: third-party cookies and those sent by a different domain to the one you are visiting will be blocked.
Never accept cookies: cookies will never be set
For further information, visit the relative page.


How to disable third-party services cookies
Google services
Facebook
Twitter
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