To do their jobs, users need to be able to download files from external sources. People tend to click on shared documents quickly, averaging less than four minutes from the time they hit the inbox. Malicious downloads enter the organization in many ways, including:
- Web browsing
- Clicking on shared links
- Installing programs
- Initiating FTP file transfers
Malicious downloads are particularly effective because bad websites are so abundant, short-lived, and contain content that changes frequently to avoid accurate categorization; with unique and polymorphic malware that evade all traditional methods of detection.