A cookie is a small piece of data that is sent by the web server and stored on the user's computer. Cookies contain information about you. For example, your login and password, location, language settings, and products in your online store basket.
Why cookies are useful
You don't have to re-enter your username and password on a site that requires authorization.
If you left an online store without placing an order, the goods in your basket are saved for when you return to the store.
If you specify your city when you first visit a weather forecast site, it won't ask you for your location again.
In web analytics tools (for example, Yandex Metrica) cookies are used to track user activity on the internet.
Why cookies pose a risk to privacy
If someone uses your computer, and your logins and passwords are saved in cookies, they can access your accounts.
If a hacker intercepts your cookies, they'll gain access to your personal data. They can be used to show intrusive ads.
In general, disabling cookies causes more inconvenience than allowing them. But if you want to do everything possible to prevent your data from leaking, disable cookies. After you do this, some sites may work incorrectly.
Delete cookies
If you delete cookies regularly, this reduces the risk that your personal data might leak, and saves space on your hard drive. The browser allocates memory for cookies, and if you visit a lot of sites, the amount of memory can be quite large.
All cookies
Alert
If you delete all cookies, you automatically log out of your accounts on all sites. Furthermore, you may lose items added to your carts and your location settings.
Keyboard shortcuts
In Settings
Press Ctrl + Shift + Del (on Windows and Linux) or Shift + ⌘ + Backspace (on macOS). Alternatively, click → History → Clear history.
In the list Clear history select the period for deleting cookies.
Select Cookies and other site and plugins (disable the other options if you want to delete only cookies).
Click Clear.
Click → Settings → Websites → Advanced site settings.
Under Cookies, click Cookies and site data → Delete all.
The Protect panel opens. In the connection status section, click Learn more.
Click the <...> cookie files for this site link. A window with a list of cookies will appear.
Click to the right of the desired cookie.
Click → Settings → Sites.
At the bottom of the page, click Advanced site settings.
In the Cookies section, click Cookies and site data.
Start typing the site name in the search bar on the left.
Hover over the line with the desired site and click Delete.
Disable saving cookies
By default, all websites are allowed to save cookies.
All cookies
Click → Settings → Sites.
At the bottom of the page, click Advanced site settings.
In the Cookies section, select Not allowed.
Note
Some sites contain trackers, such as ad banners that collect information about you. To block them, select Restrict third-party cookies or Block third-party cookies.