F-Secure Virus Descriptions : Zone.Identifier

There is no virus by this name. However, we occasionally get queries about this, as many Windows XP files have an invisible stream by this name.

Existance of Zone.Identifier stream on some files is normal, and as such is of no cause for concern. This stream is generated by Internet Explorer and Outlook when saving files from to local disk from different security zones.

Typical content of such file would be:

  [ZoneTransfer]
  ZoneId=3