-- Ease of Removal
1: Consistent file contents
2: Runs as a BHO or shell extension
3: Runs as a service
4: Uses running processes
5: File names uniquely generated
-- Privacy Risks/Security Changes
1: Changes internet security settings
-- Damage/Intrusion/Annoyance
1: Modifies non-critical registry entries
2: Changes browser search settings
3: Significantly slows down the computer
4: Creates new files
-- Propagation/Saturation
1: Infects from a link in an email
2: Infects from an email attachment
3: Installed by other infections