Samsung UE50ES6300U E-Manual page 541

Enable or disable the Privacy mode.
When the Privacy mode is enabled, the
browser does not retain the URLs of
sites you visit. If you want to enable
Private Browsing, select Yes.
If the Private Browsing function is
running, the "Stop" icon appears in
front of the URL at the top of the
screen. To disable Private Browsing,
select it again when Private Browsing is
enabled.