SMS Blaster Detection and Protection
Portable SMS blaster attacks from rogue base stations bypass every conventional network defense. Identify them through core network signaling analysis and give your team and LEA the means to act before your subscribers get compromised.
Proactively Detect SMS Blaster Fraud and Protect Subscribers
Effective SMS Blaster Detection
With Heksagon, you gain the ability to identify SMS Blaster activity through core network signaling analysis and location pattern anomalies that rogue base stations leave behind.
Subscriber Impact Limitation
Once an attack is detected, automatically identify and notify affected subscribers before they act on a malicious message, with the option to temporarily restrict data access via your provisioning platform.
Positioning Support for LEA
When an attack is confirmed, provide MNO/law enforcement with precise positioning data from subscriber signaling, enabling rapid identification and physical location of the rogue device operator.
How Heksagon Detects SMS Blasters
SMS Blasters leave no trace in CDRs, billing records, or SMS logs. They operate entirely outside your network. Conventional fraud tools, including SMS Firewalls and CDR-based rules, offer no visibility into the attack. Heksagon detects SMS Blaster activity by analyzing the signals that rogue base stations do leave behind: anomalies in core network signaling at the handover layer.
Our platform ingests A-Interface (2G/3G), 3G Iu-CS, LTE S1, and 5G NG signaling data via mirror, proxy, or near-real-time feed from your existing signaling monitoring infrastructure.
These streams are correlated using Heksagon's multi-stream scenario processing and AI/ML models. This reduces false positives and raises detection confidence significantly compared to any single signal in isolation.
SMS Blaster Protection Features: From Detection to Resolution
Detecting an SMS Blaster is the first step. Heksagon's platform supports the full response lifecycle that follows.
Support for law enforcement positioning
An SMS Blaster operates outside your network and no configuration change can stop it. Resolution requires law enforcement cooperation, and that requires data. Heksagon supports E-CID-based location estimation using RSRP/RSRQ data from the E-SMLC module, and historical attack correlation to surface the fraudster operating the device.
Proactive limitation of subscriber impact
Heksagon identifies which subscribers were likely targeted and gives you two levers: proactive notifications warning them away from recent messages, and optional data access restriction via your provisioning platform API, closing the window between attack and harm.
Flexible case management
Every detected event lands in Heksagon's case management system, complete with signaling history, subscriber impact lists, and geographic data, all ready for analyst review or law enforcement reporting.
Heksagon: An Industry-Validated Contributor
Heksagon presented SMS Blaster Detection and Prevention at GSMA's Fraud and Security Group (FASG) meeting #34 in February 2026, contributing to the industry's shared understanding of detection methods and response frameworks.
GSMA recommends correlating signals across multiple detection layers to reduce false positives, a principle that sits at the core of Heksagon's approach. By doing exactly that, our platform delivers detection confidence that no single data source can achieve alone.
Heksagon SMS Blaster Detection and Protection Resources
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SMS Blaster Detection and Protection Brochure
Learn more about Heksagon and our SMS Blaster Detection and Protection solution!
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Frequently Asked Questions
What is an SMS Blaster and how does it differ from other SMS fraud?
An SMS Blaster is a portable fake base station that captures nearby mobile devices, downgrades them to unsecured 2G, and injects fraudulent messages without those messages ever passing through the operator's network. Unlike grey route fraud or SIMBOX-based A2P bypass, SMS Blasters leave no CDR or billing trace, making them invisible to conventional fraud management tools.
Why can't an SMS Firewall block SMS Blaster attacks?
SMS Firewalls operate on traffic passing through your network infrastructure. SMS Blasters bypass that infrastructure entirely. Messages are delivered over the rogue device's own 2G link. No SMSC event is generated, no billing record is created, and the firewall simply has no visibility.
What data sources does Heksagon use to detect SMS Blasters?
Using Convergent Fraud Analytics, Heksagon analyzes core network signaling data from the A-Interface (2G/3G), 3G Iu-CS, LTE S1, and 5G NG interfaces, received via mirror, proxy, or near-real-time feed from the operator's existing signaling monitoring solution.
Does SMS Blaster detection require new infrastructure?
In most cases, no. Detection is built on signaling data that operators with existing signaling monitoring infrastructure already capture. Heksagon ingests that data into the Convergent Fraud Analytics platform alongside other fraud detection scenarios no separate system is required.
Can Heksagon help locate a rogue base station?
Yes. Heksagon supports E-CID-based positioning using RSRP/RSRQ data from the E-SMLC module to estimate the physical location of the rogue device, and historical event correlation to identify individuals who may be operating it across repeated attack campaigns.
Is this a standalone product or part of Heksagon's existing platform?
SMS Blaster detection is part of Heksagon's Convergent Fraud Analytics platform. Operators already using Heksagon for SIMBOX prevention, interconnect fraud management, or other analytical fraud scenarios can activate SMS Blaster detection scenarios through the same platform, data infrastructure, and analyst interface.
Has Heksagon validated this capability with the industry?
Yes. Heksagon presented SMS Blaster Detection and Prevention at GSMA FASG #34 in February 2026, contributing to the group's shared detection methodology and response framework recommendations.
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