Microsoft Excel 2002 Update: Macro Modification Vulnerability

This update addresses a vulnerability that could allow malicious code to run in an Excel file without warning. In an Excel 2002 file, it is possible for the macros to be modified in such a way that a macro can run with no warning issued. This could cause damage to data or allow unauthorized retrieval of data from your system when you visit a Web site or open an e-mail message. After applying this update, a warning will appear before opening an Excel file containing macros.