An active system compromise on two of the three client systems in the domain was discovered. SystemA (Windows 2000 Advanced Server, IIS, SQL Server, Commerce Server 2000, Content Management Server) and systemB. (Windows 2000 Advanced Server, IIS, Commerce Server 2000, SQL Server) had both been compromised, and had been used to scan other computers for security vulnerabilities. These systems were in need of various security hotfixes and service packs from Microsoft, and also appeared to be configured in a manner that created opportunities for attackers to gain unauthorized access. In addition, system logging was not properly configured, making evidence of the original attack vector(s) difficult, if not impossible, to find.
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