Messaging is still a prominent driver of revenue for an Operator regardless of the scale of operations. However, the revenue generated from messaging traffic is subject to severe threats such as grey routes, SPAM and international fraudulent SMSs where any vulnerabilities of the network infrastructure is exploited to mimic genuine traffic. This will cost Operators not only losses in terms of not being able to recuperate inter connectivity fees but network overload which can affect delivery of genuine revenue generating traffic and performance of the network. Compensations and complaint management by call centres for any fraudulent messages that subscribers have received can also add up to the costs that Operators incur. There have been instances of subscriber personal details being compromised as a result of SPAM messages and where subscribers have been billed unduly due to fraudulent messages. Regulations have become more stringent to protect subscriber rights and confidential information and security standards such as IR 70 and IR 71 are being heavily enforced by Regulators to Operators. Wavenet Prime Firewall is a holistic fraud prevention and network security solution which provides protection against all forms of network threats. It filters Mobile Originated messages (MO), Mobile Terminating messages (MT) and Application traffic (SMPP).
Subscribers are targeted by fraudsters to receive unsolicited SMS. These unintended messages tend to have various content including commercial information, bogus content, requesting of personal information which invites responses from the receivers. These messages can come through from a mobile user, external SMSC or a third party application. Wavenet SMS Firewall detects SPAM messages using multiple detection mechanisms which can be defined globally or network wise.
- Known SPAM
SPAM content can be defined in the system for detection
- Signature Matching
Signature mechanism is used to identify SPAM content which are circulating within the network creating unnecessary traffic . Chain messages & other SPAM can be identified using partial matching, fuzzy rules & shuffled words.
- Percentage Matching
A detection optimizer which uses percentages for signature matching.
Bayesian algorithm is used with a trained word database for content analysing.
In network flooding, exceeding number of unwanted messages are directed to the mobile network. Flooding can happen from MO, MT, SMPP & SRI requests which are originated for mobile devices or applications. Prime scans through total system and individual node traffic to detect security threats based on message frequency settings.
Spoofing is receiving messages with faked MSISDN which can leads to wrongfully charging customers and identity misuse. Spoofed MO messages can from the MSC/VLR. Detection will be done analysing signalling level information. Prime Firewall have functionality will be used to make an accurate decision. Once detected alarms can be triggered or automatic blocking is possible.
MT faking can be a issue for most operators and the threats can originate locally or internationally. Fraudsters use illegal links to access the mobile network and terminate messages impersonating SMSCs. This will result in home operator terminating local or international SMS traffic without a return (termination charge).
In GT Scanning Prime FW will monitor the originating point and the number of requests to determine security breaches.
Prime Firewall includes Real-time detection and blocking, Alarm triggering and Load balancing.