M1014: Interconnection Filtering
In order to mitigate Signaling System 7 (SS7) exploitation, the Communications, Security, Reliability, and Interoperability Council (CSRIC) describes filtering interconnections between network operators to block inappropriate requests [1].
Analyst context for executives and security teams
Interconnection Filtering is a mobile-network mitigation for reducing SS7 abuse by filtering requests exchanged between network operators. Its practical value is not endpoint hardening; it is assurance that telecom interconnect paths cannot be easily used to request subscriber information for location tracking. For organizations with sensitive personnel, regulated operations, or cyber-physical exposure tied to mobile location privacy, this becomes a third-party and resilience question as much as a technical control.
Executive priority
Leaders should treat this as a telecom/provider assurance issue: can mobile carriers or relevant service providers show that SS7 interconnections are filtered to block inappropriate requests, as described by CSRIC guidance? Priority is highest where location exposure of executives, field staff, critical operations, or protected populations would create safety, privacy, legal, or operational risk. This mitigation can also support compliance and vendor-risk evidence, but the supplied ATT&CK object does not provide detection coverage or implementation guarantees.
Technical view
For SOC, IR, mobile security, and provider-management teams, validate whether inter-operator signaling traffic is filtered and logged, especially for requests that could support Location Tracking and the related Impersonate SS7 Nodes technique. Because ATT&CK provides no detection text for M1014, coverage depends on local or provider-side visibility into SS7 interconnection requests, filtering decisions, partner identities, and exception handling. This is primarily a network-operator control, so enterprise defenders may need contractual assurance, incident escalation paths, and evidence from carriers rather than direct sensor data.
Likely telemetry
- SS7 or inter-operator signaling request records where available
- Interconnection filtering allow/deny logs
- Subscriber information or location-related query metadata
- Roaming or interconnect partner identifiers associated with requests
- Filtering rule change records and exception approvals
Detection direction
- Do not assume enterprise SOC tools can see this behavior; confirm whether visibility exists internally, through a telecom provider, or only through provider assurance.
- Validate that filtering decisions are logged and reviewable for inappropriate interconnection requests tied to subscriber or location information.
- Tune reviews around anomalous partner sources, unusual request volume, unexpected request types, or unexplained exceptions, while accounting for legitimate roaming and operator interoperability traffic.
- Use the relationship to T1430 and T1430.002 to frame investigations around mobile location exposure rather than ordinary mobile app permission monitoring alone.
Mitigation priorities
- Identify which mobile services, carriers, roaming arrangements, or managed mobility providers are relevant to sensitive users and operations.
- Request evidence that SS7 interconnection filtering is implemented to block inappropriate requests between network operators, consistent with the cited CSRIC legacy systems risk-reduction guidance.
- Define escalation and evidence requirements for suspected mobile location tracking incidents involving provider-side signaling infrastructure.
- Review filtering exceptions, partner trust arrangements, and change governance as part of third-party risk and compliance readiness.
- Where direct validation is not possible, document residual risk and consider compensating executive protection, mobility policy, and incident response procedures.
Analyst notes and limits
This ATT&CK mitigation is narrow but strategically important: it addresses the inter-network signaling layer that can enable SS7-based mobile location tracking, not malware on the handset. The most useful Glexia assessment question is whether the organization can obtain credible provider-side evidence for the control and use it in risk, audit, and incident decision-making.
ATT&CK provides no official detection guidance, no platforms on the mitigation object itself, and no implementation detail beyond CSRIC-described filtering of SS7 interconnections. Any statement about actual coverage, exposure, or exploitation requires local carrier/provider evidence and environment-specific review.
Interconnection Filtering
In order to mitigate Signaling System 7 (SS7) exploitation, the Communications, Security, Reliability, and Interoperability Council (CSRIC) describes filtering interconnections between network operators to block inappropriate requests [1].
How security teams should use this page
Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.
Techniques used
This mirrors the MITRE pattern of making group, software, campaign, and technique relationships scannable. Relationship notes come from mirrored ATT&CK relationship text when available.
| Domain | ID | Name | Relationship / procedure |
|---|---|---|---|
| Mobile | T1430.002 | Impersonate SS7 Nodes Sub-technique | Filtering requests by checking request origin information may provide some defense against spurious operators.CitationCSRIC-WG1-FinalReport |
| Mobile | T1430 | Location Tracking | Filtering requests by checking request origin information may provide some defense against spurious operators.CitationCSRIC5-WG10-FinalReport |
All related ATT&CK context
Object version and sync metadata
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Imported snapshots across ATT&CK releases (1)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.1 | 1.0 | Current bundle | 991b1f8bcfd1… |
Mirrored ATT&CK source object
The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.
External references and citations
MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.
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[1]
CSRIC5-WG10-FinalReport
Communications Security, Reliability, Interoperability Council (CSRIC). (2017, March). Working Group 10 Legacy Systems Risk Reductions Final Report. Retrieved May 24, 2017.
Open source URL -
[2]
mitre-attack M1014Open source URL
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