These are likely the same people that store things like social security numbers, passwords, and other sensitive information in text files or basic note applications. (researchingparalegal.com)
One other option to consider: if you allow remote access, have people travel with a device that has no client data or other sensitive information on it. (slaw.ca)
For your security, please do not include account / social security number or other sensitive information via email. (americaneagle.org)