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The Delhi blast accused were using the Session app. Learn what it is and how it works.
Siddhi Jain | November 13, 2025 6:15 PM CST

The Delhi blast accused were using the Session app to communicate with their handlers. This app prioritizes privacy and does not require a mobile number.

Agencies investigating the blast near the Red Fort in Delhi have uncovered significant information. The investigation revealed that the bomb blast accused, Dr. Muzammil and Dr. Umar, were using a messaging app called Session. They were communicating with their handlers through this app. A handler named Abu Uxha instructed them to use this app to ensure their conversations would not be leaked and that agencies would not be able to access their communications. Let's learn how this app works.

What is the Session app?

Session's website states that it is an end-to-end encrypted messenger that protects your private data. This is a decentralized app designed and developed by privacy experts. The company claims that it does not collect users' private data, eliminating the risk of data leaks. It also uses safe paths that protect user conversations from hackers. Its code is open source, and anyone can view and audit it. The website claims that user data will never be sold to third parties.

How the App Works

A unique feature of the Session app is that it does not require a mobile number to create an account. It also does not store any metadata, making it nearly impossible to track messages or identify users. It routes web traffic through multiple servers, thus obscuring IP addresses. This makes user locations invisible. The company states that no third party can view messages except the two people chatting. Conversations on this are completely encrypted and the user can manage the encryption keys himself.


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