Prior art — US Patent 10574721

The USPTO database shows the following patent citations as prior art for US Patent 10,574,721:

US5974549A
- Full Citation: US5974549A, "Security monitor," Soliton Ltd. (1999-10-26)
- Publication Date: October 26, 1999
- Filing Date: March 27, 1997
- Brief Description: This patent describes a security monitor that restricts access to resources based on security policies. It can intercept requests for resources and determine if the request is permitted, potentially using user identification and security level.
- Potential Anticipated Claims: This patent potentially anticipates aspects of claims 1, 7, and 12, particularly regarding the concept of intercepting requests and enforcing access policies to resources. The "enforcer" component in US10574721, which intercepts system calls to restrict connections, aligns with the general concept of a security monitor.
US9055048B2
- Full Citation: US9055048B2, "Secure browser," Questionmark Computing Limited (2015-06-09)
- Publication Date: June 9, 2015
- Filing Date: May 16, 2003
- Brief Description: This patent details a secure browser designed to prevent unauthorized access to computer resources and to control the environment in which web content is displayed. It often focuses on maintaining the integrity of an examination environment.
- Potential Anticipated Claims: This reference could potentially anticipate elements of claims 1, 7, and 12 that relate to providing secure access to content and controlling the browser environment, especially concerning the isolation of content to prevent security risks.
US8095967B2
- Full Citation: US8095967B2, "Secure web site authentication using web site characteristics, secure user credentials and private browser," White Sky, Inc. (2012-01-10)
- Publication Date: January 10, 2012
- Filing Date: July 27, 2006
- Brief Description: This patent describes methods for secure website authentication, including the use of a "private browser" or secure browsing mode. It focuses on authenticating users and protecting credentials.
- Potential Anticipated Claims: This patent may anticipate the general concept of a "fresh browser instance" for sensitive content as described in claims 1, 7, and 12, particularly the isolation aspect for security reasons related to user credentials and sensitive information. The idea of a "private browser" aligns with the objective of compartmentalization.
US20080250159A1
- Full Citation: US20080250159A1, "Cybersquatter Patrol," Microsoft Corporation (2008-10-09)
- Publication Date: October 9, 2008
- Filing Date: April 4, 2007
- Brief Description: This publication relates to systems and methods for identifying and responding to cybersquatting, which involves malicious domain registrations. While not directly about browser isolation, it deals with identifying and managing potentially malicious web domains.
- Potential Anticipated Claims: While less directly related to the core browser instance isolation, this patent could be seen to anticipate, in a very broad sense, the identification of "sensitive" or "risky" URLs, as part of the data defining web content classes in claims 1, 7, and 12.
US8359402B2
- Full Citation: US8359402B2, "Intercept device for providing content," Seachange International, Inc. (2013-01-22)
- Publication Date: January 22, 2013
- Filing Date: November 19, 2008
- Brief Description: This patent describes an intercept device that can intervene in communication streams to provide or modify content. This could be relevant in controlling what a browser receives.
- Potential Anticipated Claims: This patent could be considered prior art for the "enforcer" component described in claims 1, 7, and 12, specifically its ability to "intercept a request" or "intercept a system call" and potentially modify DNS responses or redirect traffic, as described in the detailed description of US10574721.
US20110167492A1
- Full Citation: US20110167492A1, "Virtual Browsing Environment," Ghosh Anup K (2011-07-07)
- Publication Date: July 7, 2011
- Filing Date: June 30, 2009
- Brief Description: This publication discloses a system for providing a virtual browsing environment, which offers isolation from the host operating system, often for security purposes.
- Potential Anticipated Claims: This reference is highly relevant as it describes a "virtual browsing environment," which directly relates to the concept of isolating browsing sessions. It potentially anticipates the core idea of launching separate, isolated browser instances for different types of content, as detailed in claims 1, 7, and 12, particularly the aspect of preventing information leakage and active attacks through compartmentalization.
US20130239231A1
- Full Citation: US20130239231A1, "Communication Between Web Applications," Jacek Korycki (2013-09-12)
- Publication Date: September 12, 2013
- Filing Date: March 7, 2012
- Brief Description: This publication focuses on methods for secure communication between different web applications, which can involve isolating their contexts.
- Potential Anticipated Claims: This could be considered prior art for aspects of claims 1, 7, and 12 that involve communication between browser components (e.g., browser extension and daemon) for managing web access and content classification, albeit from the perspective of inter-application communication rather than full browser instance isolation.
US9418243B2
- Full Citation: US9418243B2, "Invoking a private browsing mode by selection of a visual control element within a browser tab," Google Inc. (2016-08-16)
- Publication Date: August 16, 2016
- Filing Date: June 25, 2012
- Brief Description: This patent describes how to initiate a private browsing mode (like "Incognito" mode) within a browser through user interface elements. Private browsing modes typically offer a degree of session isolation by not saving browsing history, cookies, etc.
- Potential Anticipated Claims: This patent is relevant to claims 1, 7, and 12, particularly the concept of a "fresh browser instance" or isolated browsing session. While standard private browsing might not achieve the same level of system-call interception and content class enforcement as US10574721, it establishes the concept of user-initiated, isolated browsing contexts to prevent information leakage.
US20150278311A1
- Full Citation: US20150278311A1, "Content class for object storage indexing system," Hitachi Data Systems Corporation (2015-10-01)
- Publication Date: October 1, 2015
- Filing Date: February 27, 2013
- Brief Description: This publication discusses defining and managing "content classes" within an object storage indexing system, used for categorizing and organizing data.
- Potential Anticipated Claims: This prior art may anticipate the concept of defining "web content classes" as described in claims 1, 7, and 12, particularly the idea of categorizing content based on certain rules or attributes. While the application is different (object storage vs. web browsing), the underlying principle of content classification for management purposes is similar.