Penetration testing

for telecoms companies.

Fast, CREST-accredited, AI-augmented pentesting that keeps your networks secure, your customers connected, and your compliance on track: all without downtime.

Penetration testing trusted by telecom leaders

Longbluediv

Telecom security testing that keeps you online and in control

Longbluediv

Challenge:
“We can’t afford testing that risks downtime.”

Our solution:
We schedule around peak usage windows and deliver vulnerabilities in real time so you can patch issues without service disruption.

Challenge:
“Our network footprint is huge and a prime target.”

Our solution:
CREST-accredited testing across towers, routers, switches, backbone infrastructure, and operational systems. Catch threats before they cause outages or expose customer data.

Challenge:
“Telecom regulations leave no room for gaps.”

Our solution:
Reports designed to support ISO 27001, GDPR, and other telecom regulations, with quick turnaround for audits and customer due diligence.

Challenge:
“A single breach could damage our brand overnight.”

Our solution:
Continuous monitoring for vulnerabilities in customer portals, mobile apps, and APIs. AI-powered testing for telecom-specific threats like SS7/Diameter abuse, insecure provisioning, and account takeovers.

Challenge:
“Security testing slows down engineering and network teams.”

Our solution:
Real-time findings and collaboration via your existing tools, so fixes happen fast without derailing change windows or deployment cycles.

Why telecom companies choose OnSecurity

Longbluediv

Traditional pentesting isn’t built for 24/7, zero-downtime industries like telecoms. Our AI-augmented approach delivers the security validation you need without interrupting service.

Telecom cybersecurity ROI

  • 3× faster compliance preparation
  • 50% reduction in security testing overhead
  • Zero customer-impacting downtime during testing


Risk reduction

  • Telecom outages cost an average of $100k per hour
  • Signalling protocol abuse is rising across 4G and 5G networks
  • Our telecom clients: Zero high-impact breaches in the last 12 months


Business impact
:

  • Avoid SLA penalties and regulatory fines
  • Reduce customer churn from outages or breaches
  • Accelerate secure 5G and service rollouts

Get an instant telecoms pentest quote

How much does telecom penetration testing cost? Use our instant quote generator to find out now.

Our AI-augmented pentesting: Built for telecom resilience

Longbluediv

Telecoms operate in a high-threat, high-availability environment. Our testing spans physical, digital, and protocol layers to keep you ahead of attackers.

Simulate targeted attacks on core network and infrastructure.

  • Router & switch penetration testing
  • Tower and base station security reviews
  • Resilience & redundancy validation

Test every digital touchpoint for vulnerabilities.

  • Web & mobile app assessments
  • SIM provisioning & account takeover prevention
  • Fraud detection gap analysis

Close off entry points between systems and partners.

  • API abuse prevention
  • Interconnect & BSS/OSS system testing
  • Protocol manipulation simulation

Lock down every signal and device on your network.

  • Wireless network penetration testing
  • SS7/Diameter protocol security checks
  • IoT device & CPE security

Trusted by telecoms companies like yours

Onsecurity Is A Momentum Leader On G2 Reviews
Onsecurity Is A High Performer On G2 Reviews (2025)
Onsecurity Is A High Performer On G2 Reviews (2025 Europe)
Onsecurity Is A High Performer On G2 Reviews (2025 Emea)
Onsecurity Is Rated 4.9 On G2 Reviews

OnSecurity is proud to be one of the highest-rated pentest vendors in the world based on G2 reviews
4.9 stars

Specialised penetration testing

Longbluediv

Fast, intelligent, CREST-accredited AI-Augmented pentesting designed specifically for industry.

Fintech Pentesting 2

Fintech

Pentesting designed specifically with financial technology companies. You're building the future of finance. Don't let cybersecurity slow you down.

Retail Pentesting 2

Retail

From POS terminals to ecommerce platforms, we help you protect revenue, maintain trust, and meet compliance without slowing sales.

Get started in under 60 seconds

  1.  Instant quote – Answer 5 quick questions for accurate pricing
  2. Book your window – Schedule testing around peak network usage
  3. Start testing – Begin within 24 hours
  4. See results – Real-time vulnerability detection and reporting

Frequently Asked Questions

Longbluediv

Got a question you need answering? Our FAQs should help guide you

It’s a simulated cyberattack on your infrastructure, applications, APIs, and wireless networks to identify vulnerabilities that could disrupt service, breach customer data, or cause regulatory issues.

  • Core network infrastructure (towers, routers, switches)
  • Web & mobile customer portals
  • APIs & interconnect integrations
  • Wireless networks & IoT devices
  • Telecom protocols like SS7 and Diameter

No, we work around your operational schedule and avoid peak service windows.

Yes, including SS7, Diameter, SIP, and other signalling protocols.

Yes, our reports support ISO 27001, GDPR, and other national telecom regulations.

First findings within hours, with critical vulnerabilities flagged immediately.

We deliver real-time results, faster scoping, and flexible scheduling to avoid operational impact: not slow, once-a-year reports.