|FROM ||Ruben I Safir
|SUBJECT ||Re: [hangout] CPU-based security for Windows XP, Red Hat Linux coming
|From owner-hangout-desteny-at-mrbrklyn.com Mon Jun 7 18:55:42 2004
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Date: Mon, 7 Jun 2004 18:55:39 -0400
From: Ruben I Safir
Cc: "'hangout -at- nylxs . com'"
Subject: Re: [hangout] CPU-based security for Windows XP, Red Hat Linux coming
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Is this in any way related to DRM?
On 2004.06.07 17:42 "Inker, Evan" wrote:
> CPU-based security for Windows XP, Red Hat Linux coming
> The hardware security feature will get OS support later this year
> News Story by Todd R. Weiss
> JUNE 07, 2004 (COMPUTERWORLD) - Microsoft Windows XP Service Pack 2 and the
> next version of Red Hat Enterprise Linux 3 will support new CPU-based
> security protections designed to stop incoming malicious executable code
> from being triggered.
> The improved security feature has been included in 64-bit CPUs from Advanced
> Micro Devices Inc. since last year, but operating system makers haven't yet
> built support for the technology into their code, said Jeff Lowe, desktop
> marketing manager at Sunnyvale, Calif.-based AMD. That will change when
> Windows XP SP2 is released later this year and when Red Hat's new enterprise
> Linux OS ships in August.
> AMD calls its version of the new technology Enhanced Virus Protection. It
> was created by making changes to the silicon architecture in the processors
> that alter how code is permitted to enter and exit system memory, Lowe said.
> As a result, malicious code that acts in nonapproved ways can be stopped at
> the gate.
> "We think it's a great idea," he said. "You'll automatically get a level of
> security with it, then when you add security software you'll make it as hard
> as possible for hackers to get your company's data and your data. It's as
> many speed bumps as you can put in" to prevent attacks.
> Red Hat is now working on the new NX -- or "no execute" -- technology in
> prototype form for use with x86 processors from Intel Corp. and with Intel's
> 64-bit extension technology, said Tim Burke, director of server development
> at Raleigh, N.C.-based Red Hat. NX prevents an operating system from
> executing malicious code at the CPU and memory levels so it can't infect a
> computer or system.
> The NX technology is already present on Intel Itanium CPUs and is now in the
> prototype stages for x86 CPUs, he said.
> Red Hat is also working on a related security feature called Execshield,
> which is designed to help separate the program stack from its instruction
> area to prevent executables from erroneously being run in the event of an
> overflow, Burke said. Execshield also randomizes the memory address of a
> program stack to make it harder for malicious code to know where to gain
> entry into the program.
> "This makes it almost impossible to figure where to put the malicious
> instructions," he said.
> Dan Snyder, a spokesman for Intel, said its Execute Disabled Bit security
> technology is already included in the company's Itanium CPUs. Support for
> the technology will also be built into Pentium 4 chips by the third quarter
> of this year, he said.
> "It's not the be all and end all," Snyder said, but it should help prevent
> buffer underrun and other malicious attacks. "This basically prevents that
> by locking the operating system into not allowing it" to occur, he said.
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