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Execute Disable Bit
Last modified: Thursday, April 26, 2007 

Execute Disable Bit (EDB) is an Intel hardware-based security feature that can help reduce system exposure to viruses and malicious code. EDB allows the processor 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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Processors
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  Related Links

Intel's Home Page
Offers a list of company news items and information about their products. Additionally, there are links to a software showcase, developer's area, customer support, and newsgroup forums.

Execute Disable Bit Functionality Blocks Malware Code (PDF)
Execute Disable Bit capability is an enhancement to 32-bit Intel architecture. An IA-32 processor with Execute Disable Bit capability can protect data pages against being used by malicious software to execute code.

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Reporting on the latest hardware and software technology for the PC enthusiast.





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