In this paper we look at email spam, its impact on enterprise IT today, and provide a straightforward primer to answer the following questions:

• What is spam and why is it still a challenge?
• Why you should be thinking about it?
• What is everyone else thinking?
• What can you do?
• Are organizations happy they have the problem licked?
• Where to start
• Protecting at the desktop, at the edge and in the cloud
• Summary
• Collation of action points and a distillation of all the best bits