Here is the GSA's written policy about the non-private nature of any communications

on a GSA device (which applies to the devices provided to the Trump transition team).


https://www.gsa.gov/cdnstatic/CIO_P_2165.2_GSA_Telecommunications_Policy_%28Signed_on_4-25-2014%29.pdf

2. Applicability . This policy applies to all GSA employees, contractors/subcontractors as specified in Memorandum of Understanding (MOUs) or other agreement vehicles, government agencies, individuals, corporations, or other organizations that process or handle any GSA - owned information, data, or IT system equipment.

d. Information ownership . All documents, images and messages composed, sent, received or stored on GSA - provided equipment remain the property of the GSA .

9. Monitoring . GSA IT continuously monitors use of GSA telecommunications . GSA may audit a user’s telecommunications usage at any time. The CIO P 2100.1I “G SA IT Security Policy ” states:

a. Obtaining access to GSA resources must constitute acknowledgment that monitoring activities may be conducted.

b. Users have no expectation of privacy on GSA IT systems. All activity on GSA IT systems is subject to monitoring.