Execute Bit

Execute Bit

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sorry guys if I sound silly.

Is Execute Bit and Intel® Trusted Execution Technology (Intel® TXT) basically the same thing?
I mean to ask if Intel® Trusted Execution Technology (Intel® TXT) is some kind of advance version of Execute Bit Technology.

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Imagen de Gael Hofemeier (Intel)

No, they are not the same things:

Intel Trusted Exection Technology

  • Intel Trusted Execution Technology (Intel TXT) is the name of a computer hardware technology whose primary goals are (a) Attestation – attest to the authenticity of a platform and its operating system (OS); (b) assure that an authentic OS starts in a trusted environment and thus can be considered a trusted OS; (c) provide the trusted OS with additional security capabilities not available to an unproven OS.
  • Intel TXT uses a Trusted Platform Module (TPM) and cryptographic techniques to provide measurements of software and platform components so that system software as well as local and remote management applications may use those measurements to make trust decisions. This technology is based on an industry initiative by the Trusted Computing Group (TCG) to promote safer computing. It defends against software-based attacks aimed at stealing sensitive information by corrupting system and/or BIOS code, or modifying the platform's configuration.

Execute Disable Bit and Enterprise Security

  • Execute Disable Bit (EDB) is an Intel hardware-based security feature that can help reduce system exposure to viruses and malicious c EDB allows theprocessor to classify areas in memory where application code can or cannot execute. When a malicious worm attempts to insert code in the buffer, the processor disables code execution, preventing damage and worm propagation. To use Execute Disable Bit you must have a PC or server with a processor with Execute Disable Bit capability and a supporting operating system. EDB-enabled processors by Intel are indicated by a "J" after the CPU model number. Execute Disable Bit is abbreviated as EDB (by Intel) or XDB.
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Imagen de Adnan K.

thank you Gael for the info.

I was also looking for this.

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