Our project manager has asked us to answer some security question for a few prospective clients. One ofthe questions is: If the client provides data via email, what security considerations should be made?
Consider the 'data' to be an attachment.
The main question on my mind is: is it possible for third parties to 'spy' on emails in transit? So if I send an email with an attachment, under what conditions would it be possible for a third party to see that email, and the attachment, and can they copy the attachment for themselves?
Are there any other security issues to be considered when sending emails with attachments?