Details
Excel features related to hiding data or locking data with passwords are not intended to secure or protect confidential information in Excel. These features are merely meant to obscure data or formulas that might confuse some users or to prevent others from viewing or making changes to that data. Excel does not encrypt data that is hidden or locked in a workbook.
Microsoft: Office Online, Overview of security and protection in Excel

The Threat From Within
Employees are the biggest source of risk - Additional legal requirements - Damages can be fines and negative effects on corporate reputation

How Secure Calc Solves the Security and Privacy Problems in Excel
Insufficient security capabilities of Excel - The weaknesses of Excel are the strengths of Secure Calc - Protection of the intellectual property - Restriction of user rights - Removal of hidden sensitive data

Working with Secure Calc
Comparison with conventional rights management solutions - Seamless integration into Excel - Programming interface to VBA - The free Secure Calc Client-Add-In - System requirements

Using Secure Calc in Business Environments
Deployment in business environments - Licensing - Consulting


