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System Service Dispatch Table

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The System Service Dispatch Table (SSDT) is an internal dispatch table within Microsoft Windows.

Hooking SSDT calls is often used as a technique in both Windows rootkits and antivirus software.[1][2]

In 2010, many computer security products which relied on hooking SSDT calls were shown to be vulnerable to exploits using race conditions to attack the products' security checks.[2]

References

  1. ^ Windows rootkits of 2005, part one
  2. ^ a b Attack defeats 'most' antivirus software

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