CA-3 Information exchange
Requires exchanges of information between this system and other systems to be approved and managed through a documented agreement, each agreement to record interface characteristics, security and privacy requirements, re
4
artefacts
0
held by a system
2
at each review
hard
to go live
Vendor register / contract repository
where the evidence lives
teal = a system already holds it · olive = produced at each review
system holds itEvidence a system already holds
none for this control
periodic reviewEvidence produced at each review
- Signed agreements recording interface characteristics and security responsibilities · Vendor register / contract repository
- Review evidence against the defined frequency, including retired connections · Document repository
governing documentDocuments that govern the control
- Register of information exchanges and the agreement type covering each · Vendor register / contract repository
- Impact level determination for the information passing over each exchange · Document repository
First move
This control is evidenced by people and documents, not systems. Put the document under version control with an owner and review date, and log each review as a record with reviewer and date. Do not try to automate it.
Common gaps auditors find
- Interconnections created by projects and never registered or papered
- Agreements exist but do not state the impact level or the security responsibilities of each party
- No review cycle, so agreements outlive the connections they describe
Do this for your whole sheet
Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.
Build my evidence sheetCA-2 Control assessments · CA-5 Plan of action and milestones