ZoneIDTrimmer helps to detect and remove an alternative data stream (Zone.Identifier) stored by Windows in files downloaded from the Internet or email attachments saved on your disk, causing a security warning when these files are used. To learn more about Windows XP Attachment Manager see Microsoft knowledge base article #883260. After installing this software affected files and folders containing such files will be marked in Windows Explorer with an exclamation sign and "Trim Zone ID" command will be added to the context (right click) menu. Using this command you can get rid of Zone.Identifier stream in selected file or folder and prevent security warnings. Note ZoneIDTrimmer doesn't change the content of your files.