User Agent

A set of identifiers sent to the server when an Internet resource is visited. A user agent contains information about the application and the device from which the website is accessed, plus other information needed to correctly display the requested page.

If the user agent contains redundant data, this data can be used in subsequent attacks on the user’s device. By contrast, a fake string of identifiers is used by cybercriminals to bypass security systems and minimize traces of website visits.