Chapter 31. Protecting Your Work
The concept of âprotectionâ gets a lot of attention in the Excel newsgroups and forums. It seems that many users want to learn how to protect their workbooks from being copied or modified. Excel has several protection-related features, and those features are covered in this chapter.
Types of Protection
Excelâs protection-related features fall into three categories:
Worksheet protection:Â Protecting a worksheet from being modified, or restricting the modifications to certain users.
Workbook protection:Â Protecting a workbook from having sheets inserted or deleted, and also requiring the use of password in order to open the workbook.
VB protection:Â Using a password to prevent others from viewing or modifying your VBA code.
Caution
Before I discuss these features, you should understand the notion of security. Using a password to protect some aspect of your work doesnât guarantee that itâs secure. Password-cracking utilities (and some simple tricks) have been around for a long time. Using passwords work in the vast majority of cases, but if someone is truly intent on getting to your data, he or she can usually find a way. If absolute security is critical, perhaps Excel isnât the proper tool.
Get Excel® 2007 Bible now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
