Which version of Excel were you working with? Security was greatly increased in Office 2007. http://serverfault.com/questions/122627/how-secure-is-the-encrypti

Which version of Excel were you working with? Security was greatly increased in Office 2007. http://serverfault.com/questions/122627/how-secure-is-the-encryption-used-by-microsoft-office-2007 http://serverfault.com/questions/122627/how-secure-is-the-en...