Continuous service availability
Subscriber data protection
Network integrity
Secure partner access
Incident and restoration readiness
A WIDER OPERATING ENVIRONMENT
Telecommunications security extends beyond the network core
A telecom provider operates across network infrastructure, enterprise technology, digital channels, field operations and a broad external ecosystem. A weakness in one area can affect service availability, customer confidence, regulatory obligations or the integrity of connected services.
"The security boundary follows the service, wherever the service depends."
Network infrastructure
Radio access, transport, core networks, routing, DNS, signalling and network management systems.
Operations and business systems
OSS, BSS, billing, provisioning, customer management and revenue assurance platforms.
Customer-facing services
Mobile applications, self-service portals, APIs, digital onboarding and payment journeys.
Physical and edge environments
Towers, exchanges, data centres, edge locations, power systems and field equipment.
External ecosystem
Roaming partners, equipment vendors, cloud providers, contractors and managed service organisations.
SECURITY ACROSS EVERY PLANE
Separate critical traffic, access and operational responsibility
Plane
User and service plane
Subscriber traffic, digital services, APIs and service platforms
Exposure
Abuse, fraud, service manipulation and unauthorised data access
Control focus
Service protection, secure APIs, monitoring and abuse detection
Plane
Signalling and control plane
Signalling systems, policy functions, subscriber authentication and session control
Exposure
Interception, identity misuse, signalling abuse and service disruption
Control focus
Restricted access, protocol-aware monitoring and anomaly investigation
Plane
Management plane
Network management, orchestration, configuration tools and privileged administration
Exposure
Compromised administrator access and unauthorised configuration changes
Control focus
Privileged access governance, secure administration and change accountability
Plane
Infrastructure plane
Cloud platforms, virtualisation, data centres, transport networks and physical sites
Exposure
Platform compromise, supply-chain weakness and infrastructure failure
Control focus
Segmentation, hardening, resilience and dependency management
SERVICE CONTINUITY
A cyber incident becomes an outage problem very quickly
Telecommunications providers need response plans that account for technical containment and continued service delivery. Teams must understand which network functions, management platforms, suppliers and physical dependencies affect restoration.
Assess Your Operational ResilienceEmergency and priority communications
Identify the services, routes and dependencies that require protected availability.
Network management access
Maintain trusted administrative access during investigation and recovery.
Customer service continuity
Prepare for disruption affecting provisioning, billing, support and digital channels.
Restoration sequencing
Set recovery priorities according to service impact, technical dependency and customer consequence.
PRIORITY EXPOSURES
Risks shaped by scale, connectivity and dependency
01
Privileged network access
Compromised administrative accounts can provide access to configuration, orchestration and monitoring environments.
02
Signalling and interconnect abuse
Weak controls across protocols and trusted connections can affect subscriber privacy and service integrity.
03
OSS and BSS compromise
Billing, provisioning and customer systems can expose sensitive information and operational control.
04
Supply-chain access
Equipment vendors, contractors and managed service providers may hold persistent or highly privileged access.
05
Distributed denial-of-service attacks
Large-scale traffic can affect customer-facing platforms, DNS, network services and operational visibility.
06
Configuration and change failure
Unauthorised or poorly controlled changes can cause outages even without a traditional malware incident.
OPERATIONAL AND BUSINESS SYSTEMS
Protect the systems that provision, bill and support every service
Operations support systems
OSS environments provide control and visibility across network inventory, configuration, assurance, performance and service activation.
Security priorities
- Privileged access
- Administrative segmentation
- Configuration integrity
- Secure integrations
- Monitoring and audit trails
- Recovery procedures
Business support systems
BSS environments manage customers, products, billing, orders, revenue processes and service interactions.
Security priorities
- Customer identity protection
- Application and API security
- Fraud controls
- Data access governance
- Third-party integrations
- Transaction monitoring
Security reviews should examine the connections between OSS and BSS environments. An attacker may use an enterprise or customer-facing system to reach more operationally sensitive functions.
SECURING NETWORK EVOLUTION
Build security into 5G and cloud-native infrastructure
5G environments introduce software-defined functions, cloud platforms, orchestration, APIs and more distributed trust relationships. Security reviews must examine the underlying infrastructure and the way network functions communicate, authenticate and change.
Discuss a 5G Security ReviewAssessment matrix
Network function identity
Authentication and authorisation between services and network functions.
API security
Exposure, access control, validation and monitoring of service-based interfaces.
Workload isolation
Separation of sensitive network functions and supporting workloads.
Orchestration security
Access, change control and monitoring across automated infrastructure.
Traffic separation
Controls between user, signalling and management traffic.
Cloud infrastructure
Configuration, hardening, logging and resilience of the hosting environment.
SUBSCRIBER PROTECTION
Protect identity and data throughout the customer relationship
Join
Protect digital onboarding, identity checks, account creation, SIM or eSIM activation and payment information.
Security focus
Application testing, API controls, fraud prevention and secure identity verification.
Use
Protect subscriber profiles, service activity, authentication data, communications metadata and customer portals.
Security focus
Access governance, encryption, monitoring and data minimisation.
Change or leave
Protect account recovery, number transfer, service modification, cancellation and retained records.
Security focus
Strong verification, controlled workflows, audit trails and retention governance.
Customer protection requires coordination between security, fraud, privacy, digital product, network and customer service teams.
CONNECTED SIGNALS
Bring security and fraud intelligence into the same operating view
Security signals
Abnormal administrative access
Unexpected configuration activity
Suspicious API requests
Malicious traffic patterns
Compromised endpoints
External threat intelligence
Fraud signals
Account takeover behaviour
SIM-swap attempts
Subscription fraud
Unusual roaming activity
Payment abuse
Service misuse
Shared investigation and response
Correlate identity, network, application and customer activity so teams can understand whether an event is an isolated fraud case, a compromised account or part of a wider attack.
EXTERNAL DEPENDENCY
Your operating environment includes access you do not directly manage
Telecom operator
Network equipment vendors
Cloud and hosting providers
Roaming and interconnect partners
Field service contractors
Software and platform providers
Managed network and security providers
A supplier review should establish what the provider can access, how that access is controlled, what services depend on it and how security incidents will be handled. Contract language matters, but technical validation and operational accountability provide stronger evidence.
Review Your Supplier ExposureINDEPENDENT TELECOM SECURITY SUPPORT
Assess, strengthen and monitor the environment that delivers your services
Telecommunications cybersecurity assessment
Develop a clear view of risk across network infrastructure, OSS/BSS platforms, subscriber-facing services, enterprise systems, physical locations and external dependencies.
Request a Telecom Security AssessmentExpected outputs
Prioritised risk register
Architecture and trust-boundary findings
Critical service dependency map
Control-gap analysis
Executive risk summary
Practical remediation roadmap
Network architecture review
Assess segmentation, trust relationships, management access, resilience and monitoring.
5G security assessment
Review cloud-native infrastructure, network functions, APIs, orchestration and traffic separation.
Application and API testing
Test approved customer portals, mobile applications, partner integrations and service APIs.
Cloud security assessment
Review configuration, identity, logging, workload isolation and recovery controls.
OSS and BSS security review
Assess privileged access, integrations, configuration integrity and business-system exposure.
Red team assessment
Evaluate agreed attack paths across people, technology, physical access and external relationships.
Managed detection and response
Improve visibility, investigation and response across approved network and enterprise data sources.
Incident readiness
Develop response procedures, restoration priorities and cross-functional exercises.
Virtual CISO and advisory
Support governance, investment decisions, programme development and executive reporting.
Security testing must respect live network conditions
01
Define operating boundaries
Agree excluded systems, permitted techniques, testing windows and escalation contacts.
02
Map service dependencies
Understand how in-scope components support subscribers, partners and network operations.
03
Test with controlled methods
Match validation activity to the stability and sensitivity of the environment.
04
Escalate critical findings
Communicate significant exposure through an agreed channel without waiting for the final report.
05
Support practical remediation
Provide evidence, ownership guidance and validation criteria that responsible teams can use.
RESPONSE UNDER PRESSURE
Protect evidence while maintaining essential communications
Detect
Confirm the affected service
Validate the event
Identify related systems
Establish trusted communications
Decide
Determine service impact
Assign response authority
Involve network and business owners
Set containment priorities
Contain
Restrict compromised access
Isolate affected components
Preserve required evidence
Monitor for lateral activity
Restore
Validate configuration and data
Recover by service priority
Monitor restored environments
Record control improvements
ASSURANCE WITH CONTEXT
Connect controls with regulatory, contractual and operational requirements
Telecommunications requirements vary across countries, licences, services and infrastructure models. Digisecuritas helps teams map relevant requirements to controls, evidence and accountable owners while maintaining a clear view of operational risk.
Applicable requirements should be confirmed according to the organisation's services, jurisdictions and regulatory status. Digisecuritas provides cybersecurity and compliance-readiness support, not legal advice.
Explore Compliance and Framework ServicesNIST Cybersecurity Framework
ISO 27001
ISO 22301
Data privacy requirements
Telecom regulatory obligations
3GPP security considerations
GSMA security guidance
NIS2, where applicable
Customer and partner obligations
Internal security standards
Security support across the communications ecosystem
Mobile network operators
Fixed and broadband operators
Internet service providers
Fibre infrastructure providers
Tower and data centre operators
Satellite communication providers
Wholesale and roaming providers
Private 5G network operators
A DEFINED PATH FORWARD
Turn complex exposure into accountable action
01
Understand
Discuss the operating model, services, infrastructure and immediate concerns.
02
Define
Agree the scope, technical boundaries, stakeholders and required outcomes.
03
Assess
Review evidence, interview teams and perform approved technical validation.
04
Prioritise
Rank findings by service consequence, exploitability and remediation dependency.
05
Improve
Support remediation planning, governance updates and control validation.
Security advice must work within the realities of a live network
Digisecuritas provides independent cybersecurity expertise without tying recommendations to a preferred software product. Findings are evaluated against service impact, architecture, operating responsibility and the evidence available to leadership.
Independent validation
Recommendations are based on exposure and operational need.
Telecom-aware assessment
Network, enterprise, cloud and customer environments are considered together.
Executive clarity
Technical findings are translated into decisions leaders can evaluate.
Practical priorities
Roadmaps account for risk, dependency, effort and service continuity.
FREQUENTLY ASKED QUESTIONS
Telecommunications cybersecurity questions
Common questions from telecom operators, infrastructure providers and connected service businesses.
START WITH THE SERVICES THAT CANNOT GO OFFLINE
Strengthen network security with a clear view of operational risk
Tell us which services, systems and external dependencies matter most. Digisecuritas will help you define a focused assessment and a practical route forward.
For telecommunications providers, network operators and connected infrastructure businesses.