System and method for protecting a computer system from malicious software

DC CAFC
  • US RE43,528 E1
  • Filed: 03/09/2010
  • Issued: 07/17/2012
  • Est. Priority Date: 08/07/2004
  • Status: Active Grant
First Claim
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1. A method of operating a computer system capable of exchanging data across a network of one or more computers and having at least a first and second electronic data processor capable of executing instructions using a common operating system, comprising the steps of:

  • executing instructions a first web browser process, capable of accessing data of a website via the network, in a first logical process within the common operating system using the first electronic data processor, wherein the first logical process is capable of accessing data contained in a first memory space and a second memory space;

    executing instructions a second web browser process in a second logical process within the common operating system using the second electronic data processor, wherein the second logical process is capable of accessing data contained in the second memory space, the second logical process being further capable of exchanging data across a network of one or more computers;

    and displaying, in a windowed format on a display terminal, data from the first logical process and the second logical process, wherein a video processor is adapted to combine data from the first and second logical processes and transmit the combined data to the a display terminal;

    wherein the computer system is configured such that the second electronic data processor is operating in a protected mode and data residing on the first memory space is protected from corruption by a malware process downloaded from the network and executing as part of the second logical web browser process.

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