1. 1999-06-30 [1] Microsoft Security Bulletin (MS99-023) microsoft Microsoft Pro 2. 1999-06-24 [1] Microsoft Security Bulletin (MS99-022) microsoft Microsoft Pro 3. 1999-06-23 [1] Microsoft Security Bulletin (MS99-021) microsoft Microsoft Pro 4. 1999-06-23 [1] Microsoft Security Bulletin (MS99-020) microsoft Microsoft Pro 5. 1999-06-18 [3] Microsoft Security Bulletin (MS99-019) microsoft Microsoft Pro