Phone Number Intelligence: Advanced Fraud Signals with Telco Data

Leverage Telco Data for Deeper InsightsPhone number intelligence, derived from telco data, provides crucial insights beyond simple SMS verification, revealing advanced fraud signals like disposable numbers, VoIP lines, and SIM swap risks.

Combat Evolving Fraud TacticsFraudsters increasingly exploit phone numbers, making detailed analysis of carrier type, number history, and associated risks essential for effective fraud prevention strategies.

Enhance Account Security and TrustImplementing advanced phone verification strengthens account security, reduces unauthorized access, and builds a more trustworthy user base by validating genuine contact information.

Didit's AI-Native Approach to Phone VerificationDidit's Phone Verification product integrates OTP, carrier detection, disposable number checks, and risk scoring within a modular, AI-native platform, offering a superior defense against phone-based fraud.

The Critical Role of Phone Numbers in Digital Identity

In today's digital landscape, a phone number is often a cornerstone of a user's online identity. It's used for everything from account creation and password resets to multi-factor authentication (MFA) and transactional confirmations. However, this ubiquity also makes phone numbers a prime target for fraudsters. Simple SMS-based verification, while a good first step, is no longer sufficient to combat sophisticated attacks. Leveraging phone number intelligence, particularly data derived from telecom providers, offers a powerful way to uncover advanced fraud signals and protect your business.

Fraudsters are adept at exploiting vulnerabilities related to phone numbers, from using disposable numbers to bypass verification to executing SIM swap attacks to hijack accounts. Without deeper insights into the nature and history of a phone number, businesses remain exposed. Integrating telco data allows for a more nuanced understanding of the risk associated with a given phone number, moving beyond a binary 'verified' or 'unverified' status to a spectrum of trust.

Unmasking Fraud: Key Signals from Telco Data

Telco data provides a wealth of information that can be analyzed to detect fraudulent activities. This goes beyond just checking if a number is active. Here are some critical fraud signals that can be derived:

• Disposable Numbers: Many services offer temporary or disposable phone numbers, often used by fraudsters to sign up for multiple accounts, exploit free trials, or bypass initial verification steps without leaving a traceable digital footprint. Identifying these numbers is crucial for preventing abuse and maintaining the integrity of your user base.
• VoIP Numbers: Voice over Internet Protocol (VoIP) numbers can be legitimate, but they are also frequently utilized by fraudsters due to their ease of acquisition, anonymity, and ability to be quickly provisioned and discarded. Differentiating between legitimate and high-risk VoIP usage is key.
• Carrier Type and Line Type: Knowing if a number is a mobile, landline, or virtual number (VoIP) provides context. Mobile numbers are generally considered more trustworthy for identity verification, while a high volume of sign-ups from virtual numbers might indicate a fraud scheme.
• SIM Swap Detection: A SIM swap occurs when a fraudster convinces a mobile carrier to transfer a victim's phone number to a SIM card they control. This allows them to intercept OTPs and gain access to accounts. Telco data can often reveal recent SIM changes or unusual activity patterns that might signal an impending or recent SIM swap.
• Number Portability and Age: Frequent porting of a number between carriers or a very new number might indicate higher risk, especially if combined with other suspicious signals.

By analyzing these factors, businesses can build a more comprehensive risk profile for each user and implement targeted countermeasures. Didit's Phone & Email Verification product is designed to incorporate these advanced checks, providing a robust defense against phone-based fraud.

Implementing Advanced Phone Number Verification Strategies

To effectively leverage phone number intelligence, businesses should adopt a multi-layered verification strategy. This includes:

1. Real-time Data Lookups: Integrate real-time lookups into your onboarding and transaction flows to query telco data for the signals mentioned above. This allows for immediate risk assessment.
2. Risk Scoring and Orchestration: Combine phone number intelligence with other identity signals (e.g., IP address, device intelligence, email verification) to create a comprehensive risk score. Use this score to trigger adaptive workflows, such as requiring additional verification steps for high-risk numbers.
3. Automated Blocking: For numbers identified as disposable, high-risk VoIP, or linked to known fraud, implement automated blocking or decline actions. Didit's platform allows you to configure rules to automatically decline verifications based on various criteria, including blocklisting specific phone numbers.
4. User Experience Considerations: While security is paramount, the user experience should not be compromised. Implement these checks seamlessly in the background, only prompting for additional information when a high-risk signal is detected.

These strategies are crucial for preventing account takeovers, mitigating bonus abuse, and ensuring compliance with regulatory requirements, particularly in sectors like financial services and online gaming.

How Didit Helps

Didit provides an AI-native, developer-first identity platform that makes leveraging phone number intelligence straightforward and effective. Our Phone Verification product offers a reliable method to verify user phone numbers through one-time passcodes (OTP), but goes far beyond basic SMS delivery. We integrate advanced checks to provide comprehensive phone number validation and risk assessment at scale.

• Comprehensive Risk Assessment: Didit's Phone Verification performs advanced checks including carrier detection (mobile/landline), identification of disposable numbers, and VoIP number detection. This allows you to automatically decline verifications from high-risk phone types if desired, preventing common fraud vectors.
• Seamless OTP Delivery: Our system generates secure, time-limited OTPs and delivers them via SMS, ensuring optimized delivery through multiple carrier integrations and fallback options for delivery challenges.
• Blocklist Capabilities: Beyond real-time checks, Didit's platform includes robust blocklist features. You can easily block specific phone numbers (in E.164 format) that have been associated with fraud or abuse, ensuring they cannot be used for future verifications. This prevents repeat fraudsters from creating new accounts.
• Modular and Orchestrated Workflows: As an open, modular identity platform, Didit allows you to easily plug phone verification into your broader identity workflows. Our no-code orchestration engine enables you to define rules and actions based on phone number intelligence, combining it with other checks like Passive & Active Liveness and ID Verification for a complete fraud prevention strategy.
• AI-Native and Developer-First: Didit's AI-native architecture ensures continuous improvement in fraud detection capabilities. Our developer-first approach, with instant sandboxes and clean APIs, means you can integrate advanced phone number intelligence quickly and efficiently, without complex setup fees. Plus, Didit offers Free Core KYC, making robust identity verification accessible to all businesses.

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