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Showing posts from January, 2025

How to know if a user is blocked on Whatsapp?

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  Curious to know if a user is blocked on Whatsapp? I am here to spark you curiosity from a tech perspective. Well there are some hacks in place  However.... Here we are going to figure it out from a technical perspective. The below steps are for the Android users. 1. Click on the profile icon of the contact 2.    Click on the 3 dots on the right top corner and click on Verify security code 3. WhatsApp automatically verifies security codes through a process called key transparency.  If the contact has blocked you, end-to-end encryption will not work automatically.  Now lets understand it why it happens... What is a security code in Whatsapp? 1. A security code is usually displayed as a 60-digit number or in the form of a QR code to ensure that the chats are encrypted. 2. No 2 security codes are the same. Every 60-digit number is unique . 3. When someone blocks you on Whatsapp or the other way around, there is no handshake possible. Whatsapp revokes ...