SMS Firewall
Mediafon SMS Firewall provides real-time protection of the operator’s network against high volumes of malicious messaging traffic, Global Title (GT) manipulation, and unauthorized A2P messaging. The solution effectively protects end users from spoofing, spam, and fraudulent SMS, while ensuring compliance with national regulatory requirements.
In addition to security, the firewall acts as a revenue protection and growth tool by identifying and blocking unofficial A2P channels and redirecting traffic to authorized, commercially viable routes. The integrated Machine Learning (ML) engine continuously learns and adapts to emerging threats, improving detection accuracy and operational efficiency over time.
Fraud Control
Advanced real-time analytics algorithms detect and block:
- spam SMS,
- spoofed messages,
- social engineering and phishing attacks,
- ensuring that only authentic, trusted, and authorized traffic reaches subscribers.
Revenue Assurance
The system identifies:
- unauthorized A2P routes,
- grey routes and OTT abuse,
- enabling operators to monetize lost traffic, increase A2P revenues, and reduce financial losses.
Flash Call Detection
Accurate detection and blocking of flash calls (OTP bypassing SMS) helps to:
- protect authentication processes,
- maintain network integrity,
- prevent service abuse.
Protocol Support
The solution supports core signaling and messaging protocols:
- SMPP
- SS7
ensuring comprehensive protection across all communication channels and network layers.
Flexible Reporting and Analytics
Individually configurable reports provide:
- comprehensive traffic visibility,
- real-time statistics,
- the ability to make fast, data-driven decisions at both technical and business levels.
Machine Learning Module
The AI-powered module:
- automatically categorizes SMS traffic,
- identifies new fraud patterns,
- adapts to evolving attack techniques,
ensuring higher detection accuracy, fewer false positives, and improved operational efficiency.
Network Penetration Testing
Regular testing of the SMS network and related systems allows not only the identification of existing security vulnerabilities, but also the evaluation of the network’s real resilience against modern threats. Testing is performed under controlled conditions, simulating realistic attack scenarios.
During network testing, it is possible to:
- identify technical and configuration-related security weaknesses at an early stage,
- evaluate the effectiveness of the SMS Firewall and other security controls,
- verify how the network responds to fraud, spoofing, and unauthorized traffic attempts,
- ensure continuous network resilience against new and evolving threats.
SMS Network Testing Methods
The SMS network is tested using several targeted methods that allow for a rapid assessment of security performance under real-world conditions:
Virtual number ranges
Test SMS messages are sent to virtual numbers using the SMS Firewall to validate filtering rules, spoofing detection, and traffic control, without involving real subscribers.
Test mobile device
A physical mobile device is used to verify actual SMS delivery across different channels, assessing blocking behavior, delivery delays, and end-user experience.
Popular application testing
Real registration and OTP tests are performed with widely used applications (e.g., WhatsApp, Viber) to identify potential routing weaknesses or SMS interception vulnerabilities.
