Why are you emailing your clients weblinks to documents? They’re not supposed to click on unknown links. It’s making them nervous. Even if you’re using popular apps like dropbox to share files, you can’t be sure your client will trust the link. Nor should they. They might think it’s a phishing scheme.
In Dr. Ball’s blog, he smartly notes: “Application metadata resides within the file and moves with the file, not changing unless the contents of the file are altered. System metadata resides outside the file and can be altered without impacting the contents of the file. Hashing the file hashes its contents, not information about the file. That is, you only hash what’s stored inside the file, not its system metadata.” He also notes other points about how any hashing, and metadata cleaning, WOULD change the file.
There is set of RPost services that when combined, provide for an elegant and secure way of transmitting electronic insurance certificates, electronic titles (real estate, land, auto titles), permits, regulator issued licenses, and university transcripts while ensuring: