Access control
Keep sensitive exchanges associated with named users and explicit permissions.
NIST SP 800-171
NIST SP 800-171 file exchange for UK suppliers
If a US contract involves controlled unclassified information, trace the proposed handover from the source system to the approved recipient. Use a sample file to check the boundary, settings and evidence with your contract owner.
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UK teams. US contract requirements.
Identify the information and release owner
Check which contract and revision apply. Document the file type, sender, recipient and systems that will handle the release.
MX can support named-recipient access, permissions, encrypted exchange and activity records within that wider control environment. Using MX does not certify your organisation or establish compliance by itself.
01 / THE WORK IN PRACTICE
Test the recipient’s route
Use fictional data to walk through the invitation, identity check and access window. Include the destination system in the review.
Protected handling
Use encrypted transfer and storage alongside the wider security architecture.
Audit evidence
Retain activity records that support monitoring, review and incident investigation.
Defined process
Give prime and subcontractor teams one repeatable route instead of several improvised handoffs.
02 / A CLEARER ARCHITECTURE
Compare the settings with the approved process
Have the system owner compare the sample exchange with the assessed configuration and identify any gaps.
01Identity
02Protection
03Access
04Evidence
01Name each participant+
Connect access to the people and organisations approved for the specific task.
02Set the conditions+
Apply authentication, permissions and a useful end date.
03One observable exchange+
Keep the package, participants, access window and resulting activity evidence together so reviewers are not reconstructing the story from several systems.
04Review exceptions+
Focus attention on failed, unusual or incomplete activity instead of routine noise.
CUSTOMER PERSPECTIVES
All customer stories ↗“
“I would highly recommend MX to anyone looking to send and receive secure data quickly and efficiently.”
Daniel FrancisProject Engineer, Envisage Group
Read the story ↗01 / 02
03 / EVIDENCE YOU CAN FOLLOW
Record the result for the next review
Keep the release approval, activity reference and open questions together so another reviewer can reconstruct the test.
EXCHANGE RECORD / ILLUSTRATIVEApproved-CUI-Package.zip✓
Sender verifiedNamed account✓
Protection appliedAES-256 / ASR✓
Recipient authenticatedAccess checks✓
Activity recordedReviewable history✓
Access control
Keep sensitive exchanges associated with named users and explicit permissions.
Protected handling
Use encrypted transfer and storage alongside the wider security architecture.
04 / THE PRACTICAL POSITION
Test the proposed workflow
Use fictional records to test who can release a package, who can receive it and what evidence your contract owner can retrieve afterwards.
Access control
Keep sensitive exchanges associated with named users and explicit permissions.
Protected handling
Use encrypted transfer and storage alongside the wider security architecture.
Controls within a wider programme. MX can support configured file-exchange safeguards. It does not certify your organisation or establish compliance by itself. Confirm the service configuration, contractual terms and suitability for your data before deployment.
GOOD QUESTIONS. CLEAR ANSWERS.
A clearer route.
From the start.
Practical answers about nist sp 800-171 and where MX fits.
How does MX fit this workflow?+
Support controlled unclassified information workflows with named access, permissions, encrypted exchange and detailed transfer records. These measures form one part of a wider NIST SP 800-171 implementation.
Does using MX make our organisation compliant?+
No. Technical controls are part of a wider programme. Your organisation remains responsible for the applicable obligations, risk assessment, policies, permissions and contracts. Confirm any required agreements and service configuration with MX before handling regulated information.
What controls can we apply to a file exchange?+
Named-recipient access, authentication, permissions and expiry settings help define the exchange. Activity records let your team review what happened. The available configuration should be matched to your requirements.
Does MX replace our existing work tools?+
Keep creating, editing and storing files in the systems your team already uses. MX focuses on controlled handoffs, rather than background synchronization, live co-authoring or permanent backup.
What is included in the free trial?+
Try the MX feature set for 7 days with up to 5 users. No credit card is required.
YOUR NEXT EXCHANGE STARTS HERE
Valuable data.
Better protected.
Put better controls around your next sensitive file exchange. See how MX fits your organisation's workflow.
7 days freeUp to 5 usersNo credit card
- Full feature access
- Unlimited file size transfers
- Named recipients and MFA
- Custom branding and upload portals