Trusted by 30+ telco brands worldwide
Unmasking Hidden Holes in Your SMS Firewall
SMS Firewalls, while necessary, are constantly challenged by the resourceful A2P SMS industry. Revenue leakage occurs when actors find and exploit weaknesses, allowing them to send messages below the requested Mobile Termination Rate (MTR).
This revenue loss is often invisible without specialized testing. For instance, template spoofing (international traffic routed as a cheaper national template) or financial loss in high SIM box activity markets are only reliably detected by Network Penetration Testing (NPT).
GTC's NPT service is designed to find these holes, allowing you to monitor, detect, and close them: ideally, before significant financial damage is done.
Multi Channel Network Penetration Testing
We collect evidence of various bypass techniques that impact your monetization:
Template Spoofing
Identifying traffic downgraded from high-value international routes to low-cost national routes.
OTT Bypass
Identifying attempts to route A2P traffic through non-monetized Over-The-Top (OTT) messaging channels (e.g., WhatsApp Business API) that may avoid MTR fees.
SS7 / SIM Bypass
Detecting messages that entirely circumvent your legitimate SMSCs and monetization path.
Content Modification
Uncovering instances where the message content is altered during transit.
Voice Bypass
Uncovering the use of voice channels (like Flash Calls or other voice-based authentication methods) to circumvent SMS termination charges.
Why GTC's NPT is the Most Effective Solution Out There
We offer a unique combination of industry neutrality, broad route access for market coverage, and deep analytical rigor, making our NPT service uniquely effective at A2P SMS Fraud Detection.
Unmatched Neutrality and Route Access
Unlike aggregators who test using their own routes (which are unlikely to be the bypasses), GTC uses a wide, neutral network of trusted partners, allowing us to find the genuine routes and methods used by bad actors.
Human-Driven
Analysis
Our process goes beyond automated scoring. A human-written summary accompanies the detailed report, providing expert context on main findings and actionable input for your monetization team.
Actionable Insights for Mitigation
We reliably detect various bypass methods, often before noticeable damage occurs. This provides your team with frequent, precise input for investigation and action to stop revenue leakage fast.
Complementary Testing Services
We offer both Network Penetration Testing (NPT) for bypass detection, and Enterprise Penetration Testing (ENPT) as a complementary service to provide valuable market insights into enterprise delivery channels and trashing rates.
Comprehensive Assessment and Actionable Reporting
NPT - A2P Industry Perspective
Messages are sent via 800+ available A2P routes (via trusted partners). We collect delivered messages on the MNO side to determine if delivery occurred via the expected SMSC or a bypass method (SS7, SIM, Spoofing, etc.).
ENPT - Enterprise Perspective (Complementary)
Messages originate from enterprises/ brands to gain insights into which channel delivers the traffic, which party decided the routing, and to make the trashing rate transparent.
Detailed Report & Portal Access
A comprehensive report delivered by email, detailing data per delivered message and per test run. A customer portal provides additional insights and visualization of the raw test data.
Mitigation Consultation
Frequent calls with GTC experts to discuss findings, develop possible mitigation strategies, and take immediate action to stop revenue leakage.
Off-Net Loss Check
In SIM-heavy markets, we specifically test for financial loss caused by messages being delivered into off-net destinations.
Who Needs Network Penetration Testing?
This service is optimized for Mobile Network Operators (MNOs) with dedicated monetization strategies and their partners.
Mobile Network Operators (MNOs)
MNOs that require continuous, external validation to ensure robust and efficient SMS monetization. They seek deep intelligence to inform strategic network defense planning.
Exclusive Gatekeepers
Aggregators who secured exclusivity agreements and must ensure seamless network protection to prevent financial and reputational risk.
Firewall Vendors
Firewall Vendors who require neutral, real-world penetration data to enhance their product effectiveness and validate the performance of their proactive monitoring solutions against the latest threats.
Rapid Deployment to First Findings
Our process is designed for speed, ensuring you receive actionable fraud intelligence as quickly as possible.
Preparation & Setup
We require at least one active SIM card (preferably with us and with home routing active). Information about MTR, expected SMSCs, and delivery behavior is helpful but not mandatory.
First Test Run
(Within 24 Hours)
Within 24 hours of the SIM arrival and activation, we can run the first comprehensive test and begin the analysis.
Reporting & Review
The detailed report is shared by email, and we schedule an immediate first review call to discuss findings and outline mitigation steps.
Ongoing Engagement
Weekly, bi-weekly, or monthly calls are established to continuously monitor the bypass ratio, analyze new findings, and provide frequent input for your monetization team.
FAQ on Network Penetration Testing
NPT is a proactive, external testing mechanism that rigorously scans the global A2P messaging market to identify new fraud bypasses as soon as fraudsters deploy them.
If no bypasses are immediately apparent, some MNOs may be disappointed or doubt the result. We always recommend budget for ongoing, periodic testing, as the "cat vs. mouse" game is continuous. The absence of findings is valuable validation of your current firewall effectiveness.
Success is tracked by clear KPIs in the report: the bypass ratio is expected to decrease over time, and the average price observed per test run should increase (indicating more traffic is routed correctly). Ultimately, this helps stop the decline of your overall SMS volume.
ENPT complements NPT by providing market sales intelligence. The results allow MNO sales staff to approach enterprises directly with data on who is successfully delivering their traffic and offer direct, optimized connections.
Stop Revenue Leakage and Maximize SMS Monetization.
Relying solely on defensive firewalls is a losing strategy in the A2P market. Only comprehensive Network Penetration Testing allows you to gain deep insight into the market, catch bypasses immediately, and implement successful, long-term monetization strategies. The comparably low cost of NPT pays out fast in saved revenue.
