From d847e26340766beb1ed15bae16a9da64cf253b2e Mon Sep 17 00:00:00 2001
From: Nika mgaloblishvili <33604954+nmgalo@users.noreply.github.com>
Date: Fri, 3 Feb 2023 22:07:33 +0400
Subject: [PATCH] Fix: WhatsApp Encryption Overview link.

---
 exercises/chat-app.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/exercises/chat-app.md b/exercises/chat-app.md
index 5f05d66..cd39bd0 100644
--- a/exercises/chat-app.md
+++ b/exercises/chat-app.md
@@ -318,7 +318,7 @@ _NOTE: Ensuring a proper message order is a [tricky problem](https://www.addicti
 > **Candidate**: "Additionally, the **user perception** of privacy is as important as the privacy implementation itself. If the developer has the access to the messages - the customers might assume that those messages would be read without any consent."  
 > **Candidate**: "An end-to-end encryption could be used but I don't have any experience with the algorithms for key exchange."  
 
-_NOTE: For more information about messaging privacy check [WhatsApp Encryption Overview](https://scontent.whatsapp.net/v/t39.8562-34/122249142_469857720642275_2152527586907531259_n.pdf/WA_Security_WhitePaper.pdf?ccb=1-5&_nc_sid=2fbf2a&_nc_ohc=TUznIG51RtgAX_Lf8cM&_nc_ht=scontent.whatsapp.net&oh=01_AVz_bi984XEgdXSXsCXBbC5mwFHGq4t2v5CRSJ8UiUHqFg&oe=61BC4F59)._
+_NOTE: For more information about messaging privacy check [WhatsApp Encryption Overview](https://www.whatsapp.com/security/WhatsApp-Security-Whitepaper.pdf)._
 
 ## Conclusion
 Keep this in mind while preparing for a system design interview: