Cybersecurity for Data Centers and Telecommunications
Cybersecurity for Data Centers and Telecommunications
Security Testing for Digital Infrastructure
We assess the security of data centers, telecommunications networks, cloud and hosting environments, customer portals, and critical communication services. Testing focuses on protecting data in transit, access management, network segmentation, and service availability. We tailor the scope to your infrastructure, operational constraints, and regulatory obligations.
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Trusted by Leading Companies Across Industries
Helping Organizations Reduce Cyber Risk
3,000+ projects
We have completed more than 3,000 cybersecurity projects.
14 years
More than 14 years of experience in ethical hacking.
47 experts
A team of 47 certified experts.
20+ CVEs
Our experts have discovered more than 20 officially registered vulnerabilities.
3,293 vulnerabilities
Security findings identified in 2025.
Why Test the Security of Data Centers and Telecommunications?
Data centers and telecommunications networks ensure the availability of digital services, carry large volumes of data, and support the systems of other organizations. A successful attack can therefore affect thousands of users and cause widespread service disruption.
Risks can arise from network configurations, customer portals, cloud platforms, remote management systems, or third-party access. Insufficient segmentation may allow an attacker to move from one compromised system to other parts of the infrastructure.
Security testing helps uncover potential attack paths, verify the effectiveness of implemented controls, and reduce the risk of data breaches or disruption to critical services.
Improved Service Availability
We identify weaknesses that could cause outages affecting networks, hosting platforms, data centers, or communication services.
Protection of Data in Transit
We assess whether communications can be intercepted, altered, or redirected without authorization.
More Secure Access Management
We test user, administrator, service, and third-party access to critical systems.
Stronger Infrastructure Segmentation
We determine whether an attacker could move between customer, administrative, and critical network segments.
Who Is Security Testing For?
We tailor testing to the services you provide, your infrastructure architecture, operational constraints, and regulatory obligations.
Data Center Operators
We assess network architecture, segmentation, servers, management systems, remote access, and the separation of customer environments.
Telecom Operators
We test communication networks, customer portals, mobile applications, APIs, and systems used to provide and manage telecommunications services.
Cloud and Hosting Providers
We assess the security of cloud and hosting platforms, virtualization, containers, storage, identities, and administrative interfaces.
Digital Infrastructure Providers
We test DNS and CDN services, internet exchange points, and other technologies on which the availability and security of digital services depend.
What Do We Test in Data Centers and Telecoms?
Network Infrastructure
Through network infrastructure penetration testing, we assess firewalls, VPNs, servers, databases, network devices, segmentation, and opportunities for lateral movement.
Servers and Data Storage
We test operating systems, databases, storage solutions, virtualization platforms, and services supporting data center operations.
Telecommunications Systems
We assess systems used to provide, manage, and monitor voice, data, and other communication services.
Cloud and Hosting Environments
As part of cloud penetration testing, we assess identities, permissions, virtualization, containers, storage, network rules, and exposed services. You can also read why our project data shows that cloud environments have the highest number of vulnerabilities per test.
Customer Portals and APIs
Through web application and API penetration testing, we assess authentication, authorization, customer data protection, account management, and the resilience of business logic against abuse.
Remote and Service Access
We assess VPNs, administrative interfaces, service accounts, and access granted to employees and external suppliers.
Wireless Technologies
We test Wi-Fi and other wireless networks used for communication, device management, or access to internal systems.
Monitoring and Incident Response
We assess whether the organization can detect suspicious activity in time, evaluate it correctly, and respond appropriately.
4G and 5G Networks
We assess the security of mobile networks, their control components, network interfaces, configurations, and communication between different parts of the telecommunications infrastructure.
SS7, Diameter, and GTP
We test signaling and communication protocols used in mobile networks. We look for weaknesses that could lead to unauthorized access, user tracking, communication manipulation, or abuse of network services.
Roaming and Operator Interconnections
We assess the security of roaming interfaces, trusted interconnections, and communication between operators. We also examine whether misconfigurations or insufficiently restricted access could be exploited.
SIM, eSIM, and SIM Swap
We assess SIM and eSIM activation and management processes, customer identity verification, and opportunities to bypass implemented controls. Testing can uncover weaknesses that increase the risk of SIM swap attacks.
VoIP and Communication Services
We test VoIP infrastructure, SIP services, authentication, configurations, and protection against interception, account abuse, and unauthorized call routing.
BGP and Network Routing
We assess BGP configurations, routing policies, route filtering, and protection against incorrect or unauthorized network prefix announcements.
DDoS Protection
We assess architecture, capacity limits, protective controls, traffic filtering, rate limiting, redundancy, and preparedness for DDoS attacks. Any simulation is conducted only within an agreed scope and under controlled conditions.
Red Teaming and the Physical Security of Data Centers
Red Teaming assesses technologies, employees, processes, and physical security. In data centers, we can test access controls, third-party access, the protection of server rooms, and the security team’s response without disrupting operations.
Learn more about Red Teaming
Security Testing and Resilience Requirements
Data center and telecommunications service providers operate infrastructure on which other organizations and their customers depend. They must therefore manage cyber risks, protect the supply chain, ensure service continuity, and respond appropriately to incidents.
Security testing provides technical evidence for identifying weaknesses and verifying implemented controls. However, it does not replace legal assessment or a comprehensive compliance audit. We explain the difference between the two approaches in our article Security Audit vs. Penetration Testing.
Discuss your testing requirements
Relevant Regulatory and Security Frameworks
NIS2
NIS2 covers providers of public electronic communications networks, cloud services, data centers, DNS, CDN, and other digital infrastructure. Testing can support risk management and verification of technical security measures.
DORA
Providers of cloud, data, and other ICT services to financial organizations form part of third-party risk management under DORA. Critical ICT third-party providers may also be subject to dedicated oversight.
CER
The Critical Entities Resilience Directive focuses on the ability of essential services to prevent disruption, withstand incidents, and restore operations. Digital infrastructure is among the sectors covered.
ISO/IEC 27001 and ISO/IEC 27011
ISO/IEC 27001 supports systematic information security management. ISO/IEC 27011 provides additional security controls specific to telecommunications organizations.
How Can an Attack Affect Digital Infrastructure?
Attackers can combine vulnerabilities in networks, management systems, customer portals, and third-party access. A single weakness can therefore threaten data and service availability for multiple customers.
Service Disruption
An attack against networks, servers, or management systems can disrupt connectivity, hosting, or other critical services.
Compromise Through Remote Access
A poorly protected VPN, service account, or administrative interface can provide an attacker with access to internal infrastructure.
Movement Between Networks
Insufficient segmentation may allow an attacker to move from a compromised system into administrative, customer, or critical network segments.
Data Leakage or Manipulation
A vulnerable communication channel, storage system, or API can lead to the unauthorized acquisition, alteration, or redirection of data in transit.
Compromise Through a Supplier
External service access or a compromised connected service can provide a route into the systems of both the provider and its customers.
Explore Other Options
Explore security testing for other industries or learn how network infrastructure penetration testing and Red Teaming assess the resilience of your systems, employees, and processes.
Industry-Specific Cybersecurity
See how we tailor security testing to the technologies, risks, operating conditions, and regulatory requirements of organizations across different industries.
Explore tested industries
Network Infrastructure Testing
We simulate attacks against internal and external networks, firewalls, VPNs, Active Directory, servers, segmentation, and potential lateral movement.
Learn more about infrastructure testing
Red Teaming
Through a comprehensive attack scenario, we assess the resilience of technologies, employees, and internal processes, as well as the security team’s ability to detect, stop, and manage an attack.
Learn more about Red Teaming
The Citadelo team holds dozens of certifications, including OSCP, OSEP, OSCE³, CRTO, AWS Certified Security – Specialty, and Advanced Infrastructure Hacking, relevant to the security of data centers, networks, and telecommunications.
Experienced Ethical Hackers Protecting Digital Infrastructure
We use our experience from testing networks, cloud environments, and data centers to create realistic scenarios. We verify vulnerabilities without unnecessarily affecting service availability or day-to-day operations.
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Frequently Asked Questions
Answers to common questions about security testing for data centers, telecommunications networks, and digital infrastructure.
Yes. Before testing begins, we define the scope, schedule, safety boundaries, and procedure for handling critical findings. Higher-risk scenarios are performed only by agreement or in a separate testing environment.
We design testing to minimize its impact on service availability and normal operations. Potentially risky steps are discussed in advance and are not performed in production without explicit approval.
Yes. External testing simulates an internet-based attack against publicly accessible systems. Internal testing assesses what an attacker or compromised user could achieve after gaining access to the internal network.
Yes. We assess whether customer, administrative, and critical parts of the infrastructure are properly separated and whether an attacker could move between them without authorization.
Yes. We assess cloud configurations, identities, permissions, virtualization platforms, containers, storage, network rules, and publicly exposed services.
Yes. We test VPNs, administrative interfaces, service accounts, multi-factor authentication, and access granted to external suppliers. We also assess whether compromised access could provide a path to other systems.
Testing can provide technical evidence for managing cyber risks and verifying the effectiveness of implemented security measures. However, it does not replace legal assessment or a comprehensive NIS2 compliance audit.
We need information about the systems to be tested, environment architecture, IP address ranges, technologies used, critical services, and operational constraints. Together, we also define the objectives, schedule, contact persons, and permitted testing scenarios.
You will receive a technical report describing the vulnerabilities, supporting evidence, risk ratings, and specific remediation recommendations. The deliverables may also include an executive summary and a results consultation with our ethical hackers.
Yes, a retest can be included in the agreed project scope. Once remediation is complete, we verify whether the vulnerabilities have been properly resolved and whether the changes introduced any additional security risks.
Would You Like to Assess the Security of Your Digital Infrastructure?
Book a free 15-minute consultation. Together, we will define the appropriate testing scope based on your infrastructure, the criticality of the services you provide, and your operational constraints.
Book a free consultation
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