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Since then, User-Agent headers have become increasingly more complex, and has started containing significant uniquely identifiable information about the user. Often, this information is used to perform browser fingerprinting , allowing sites to track users across sites passively without having to load any JavaScript for the user.
Palo Alto Networks, Inc. is an American multinational cybersecurity company with headquarters in Santa Clara, California.The core product is a platform that includes advanced firewalls and cloud-based offerings that extend those firewalls to cover other aspects of security.
Palo Alto Networks: Proprietary: Included on Palo Alto Networks firewalls Proprietary, PAN-OS, Based on the Linux kernel Sophos: Proprietary: Included on Sophos UTM Linux-based appliance Cisco Firepower: Proprietary: Included on newer CISCO ASA devices which support the Firepower services module or Firepower Threat Defense Proprietary operating ...
A server implements an HSTS policy by supplying a header over an HTTPS connection (HSTS headers over HTTP are ignored). [1] For example, a server could send a header such that future requests to the domain for the next year (max-age is specified in seconds; 31,536,000 is equal to one non-leap year) use only HTTPS: Strict-Transport-Security: max-age=31536000.
On the Web, a user agent is a software agent responsible for retrieving and facilitating end-user interaction with Web content. [1] This includes all web browsers , such as Google Chrome and Safari , some email clients , standalone download managers like youtube-dl , and other command-line utilities like cURL .
The Register reported in June 2008 that traffic from AVG Linkscanner, using an IE6 user agent string, outstripped human link clicks by nearly 10 to 1. [1] A user who revisits a site shortly after changing or upgrading browsers may be double-counted under some methods; overall numbers at the time of a new version's release may be skewed. [2]
This function returns a string with one or more access method specifications. These specifications cause the user agent to use a particular proxy server or to connect directly. [1] Multiple specifications provide a fallback when a proxy fails to respond. The browser fetches this PAC file before requesting other URLs.
An email client, email reader or, more formally, message user agent (MUA) or mail user agent is a computer program used to access and manage a user's email. A web application which provides message management, composition, and reception functions may act as a web email client , and a piece of computer hardware or software whose primary or most ...