District Judge Interview Prep: Understanding WhatsApp Forensics & CDR/SDR Evidence

 Here are the interview questions with detailed model answers:

1.       What are Call Detail Records (CDR) and Subscriber Detail Records (SDR), and what kind of information do they typically contain?

Answer:

CDRs are telecom operator-generated logs of voice and SMS communications. They typically record caller and receiver numbers, call duration, timestamps, cell tower location (cell ID), and SMS metadata. They help establish who communicated, when, and from where. SDRs contain static subscriber identity data like name, address, KYC information maintained by telecom companies. However, SDRs do not contain communication timing or session details.

2.       Can CDR and SDR provide timing information related to PDFs, audio, or video files shared through WhatsApp? Why or why not?

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Beyond CDR and SDR: Unlocking WhatsApp's Encrypted Evidence

 

 

Understanding the Critical Limitations of CDR and SDR in App-Based Communication Investigations

In today's digital legal landscape, misconceptions persist regarding the evidentiary capabilities of traditional telecommunication records. Call Detail Records (CDR) and Subscriber Detail Records (SDR), while foundational to telecom investigations, show significant limitations when it comes to app-based communications like WhatsApp file sharing.

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