1. 2000-04-21 [1] Microsoft Security Bulletin (MS00-028) microsoft Microsoft Pro 2. 2000-04-21 [1] Microsoft Security Bulletin (MS00-027) microsoft Microsoft Pro 3. 2000-04-20 [1] Microsoft Security Bulletin (MS00-026) microsoft Microsoft Pro 4. 2000-04-17 [3] Microsoft Security Bulletin (MS00-025) microsoft Microsoft Pro 5. 2000-04-13 [1] Microsoft Security Bulletin (MS00-024) microsoft Microsoft Pro 6. 2000-04-12 [1] Microsoft Security Bulletin (MS00-023) microsoft Microsoft Pro 7. 2000-04-03 [1] Microsoft Security Bulletin (MS00-022) microsoft Microsoft Pro