Telecommunications
Security monitoring for network operators.
Security built for telecom networks
Network operators need to follow access across a large environment without losing the context needed for service decisions. Central records in a SIEM help investigators connect router, switch and identity activity.
Guidance
| Source | What it asks | Security support |
|---|---|---|
| Telecommunications Security Regulations | Monitor access to Security Critical Functions. | Router, switch and AAA logs. → |
| Ofcom | Evidence over 13 months. | Retention per source. → |
| CISA, December 2024 | Centralized logging with correlation. | Correlation rules. → |
| CISA, December 2024 | Monitor logins for anomalies. | Identity, network and DNS detectors. → |
| FCC CPNI | Notice within 7 business days. | A case timeline. → |
CISA guidance
Router, switch and AAA logs can reveal who accessed infrastructure and what followed. Correlation in a SIEM and historical comparisons help analysts examine activity outside an account’s expected use.
UK TSR
Plan retention for the access evidence needed in the operator’s review, including a 13-month period where applicable. Integrity controls and usable searches make that history available when a question arises.
Log volume
Size collection and storage using representative event rates, peaks, retention and search demand. Measured compression and processing performance give the team a practical basis for capacity and cost planning.
Ofcom
A useful response connects the stated security measure to its configuration, activity and review records. Reports and verifiable exports help the operator assemble that evidence.
By rule
Telecommunications Security Regulations
Monitor access to Security Critical Functions. Router, switch and AAA records provide a shared history of infrastructure access.
CISA, December 2024
Centralized logging with correlation. Correlation in a SIEM connects related events across sources while preserving the records behind the resulting finding.
CISA, December 2024
Monitor logins for anomalies. Supported network and EDR host records provide evidence for correlation and investigation.
FCC CPNI
Notice within 7 business days. A SOAR incident workflow retains ownership, evidence, approvals and actions so reviewers can follow the response.
Questions
Would we see an unapproved change?
Device logs can support alerts on recorded configuration activity. Comparing configuration state is a separate function, so the investigation should use the evidence available from both processes.
Who approves an action?
The organization defines who may approve each response. A SOAR workflow presents the decision to that person and retains the approval, action and outcome.
What stays with the operator?
The operator owns service controls, signaling-protocol security and regulatory reporting. The monitoring scope identifies which infrastructure and access records are included.
Guide
What is the UK Telecommunications Security Act?
The Act strengthens the UK framework for telecom security. Regulations and the associated code address providers’ security measures, with Ofcom overseeing compliance.
How is unusual router access detected?
Router, switch and AAA logs are collected centrally, and sign-ins unlike an account’s normal pattern are flagged.
What does CISA recommend for telecom logging?
Central logging that correlates large volumes from routers and switches, stored so it cannot be changed.
How ARRTECH takes care of telecom security
Connects security activity into a signed record, giving incident decisions and board reporting evidence that can be independently verified.
Protects intellectual property and customer trust, with content-aware controls that let organizations adopt AI on their own terms.
Expands response capacity through automation, with defined human authority and a record of who approved what.
Finds changes in behavior that predefined rules miss, connecting the signs of an attack so teams can understand what warrants action.
Investigates alerts, tests explanations and prepares the evidence, giving analysts more capacity while people retain authority over the response.
