From 1ebab7ccf17f53425bce730ff4a38ffceba75315 Mon Sep 17 00:00:00 2001 From: Denise Vangel-MSFT Date: Mon, 27 Jun 2022 16:26:11 -0700 Subject: [PATCH] Update select-types-of-rules-to-create.md --- .../select-types-of-rules-to-create.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md b/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md index ee1790a3c9..c950b5e298 100644 --- a/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md +++ b/windows/security/threat-protection/windows-defender-application-control/select-types-of-rules-to-create.md @@ -146,7 +146,7 @@ You can also use the following macros when the exact volume may vary: `%OSDRIVE% ## More information about hashes -WDAC uses the [Authenticode/PE image hash algorithm](https://download.microsoft.com/download/9/c/5/9c5b2167-8017-4bae-9fde-d599bac8184a/Authenticode_PE.docx) when calcuating the hash of a file. Unlike the more popular, but less secure, [flat file hash](https://docs.microsoft.com/powershell/module/microsoft.powershell.utility/get-filehash), the Authenticode hash calculation omits the file's checksum and the Certificate Table and the Attribute Certificate Table. Therefore, the Authenticode hash of a file does not change when the file is re-signed or timestamped, or the digital signature is removed from the file. By using the Authenticode hash, WDAC provides added security and less management overhead so customers do not need to revise the policy hash rules when the digital signature on the file is updated. +WDAC uses the [Authenticode/PE image hash algorithm](https://download.microsoft.com/download/9/c/5/9c5b2167-8017-4bae-9fde-d599bac8184a/Authenticode_PE.docx) when calcuating the hash of a file. Unlike the more popular, but less secure, [flat file hash](/powershell/module/microsoft.powershell.utility/get-filehash), the Authenticode hash calculation omits the file's checksum and the Certificate Table and the Attribute Certificate Table. Therefore, the Authenticode hash of a file does not change when the file is re-signed or timestamped, or the digital signature is removed from the file. By using the Authenticode hash, WDAC provides added security and less management overhead so customers do not need to revise the policy hash rules when the digital signature on the file is updated. The Authenticode/PE image hash can be calculated for digitally-signed and unsigned files.