janvier 2014 (3)

mardi, janvier 28 2014

Random and safe password storage for local Windows admin accounts

Nowadays, it is considered best practice to generate unique local account passwords for each machine in a Windows domain. This applies typically for the local administrator user and often one of the three following approaches are taken:

  1. The password is generated using a reversible algorithm (e.g. SHA1(salt + machine name))
  2. The password is randomly generated and then stored on a central system
  3. The password is set via Group Policy Preferences (GPPs)

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samedi, janvier 25 2014

Hash of a file using a built-in Windows tool

Calculating or verifying the hash of a file should be a common task to ensure file integrity - e.g. a file you just downloaded over a http connection. Unfortunately, there is no well-known tool under Windows to perform such a task, and most forums suggest writing their own PowerShell script, C#  […]

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samedi, janvier 4 2014

Statistics about blog comments spam

A little less than one year ago, I drew a few statistics on the spam I was getting on this blog. Since then, the number of spammy comments continued to increase as shown in the graph below:

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