Method and system for persisting untrusted files

US10885193B2 · kind B2 · utility

Assignee

• MICROSOFT TECHNOLOGY LICENSING, LLC · US

Inventors

• Bryan Born · Snohomish, US
• Giridhar Viswanathan · Redmond, US
• Peteris Ledins · Kirkland, US
• Balaji Balasubramanyan · Redmond, US
• Margarit Simeonov Chenchev · Sammamish, US
• Benjamin M. Schultz · Bellevue, US
• Hari R. Pulapaka · Redmond, US
• Frederick J. Smith · Redmond, US
• Narasimhan Ramasubramanian · Redmond, US
• Raphael Gianotti Serrano dos Santo · Redmond, US
• Nived Kalappuraikal Sivadas · Seattle, US
• Ravinder S. Thind · Sammamish, US
• Matthew David Kurjanowicz · Redmond, US

Key dates

• Filing date: Feb 12, 2018
• Grant date: Jan 5, 2021
• Expiry date: Mar 25, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2221/2113
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Securely performing file operations. A method includes determining a trust characteristic assigned to a file. When the trust characteristic assigned to the file meets or exceeds a predetermined trust condition, then the method includes performing a file operation on the file in a host operating system while preventing the file operation from being performed in the container operating system. When the trust characteristic assigned to the file does not meet or exceed the predetermined trust condition, then the method includes performing the file operation on the file in the container operating system while preventing the file operation from being performed directly in the host operating system.