The "sa" account is installed with a default null password on (1) Microsoft SQL Server 2000, (2) SQL Server 7.0, and (3) Data Engine (MSDE) 1.0, which allows remote attackers to gain privileges, as exploited by worms such as Voyager Alpha Force and Spida.
TREND MICRO PROTECTION INFORMATION
Apply associated Trend Micro DPI Rules.
SOLUTION
Trend Micro Deep Security DPI Rule Number: 1000608
Trend Micro Deep Security DPI Rule Name: 1000902 - Microsoft SQL Server 'sa' Login With 'Null' Password Vulnerability