Instagram private account stories View any private account story

Last Sunday, I was testing for Instagram stories.
With two devices one with the Android phone and other was the desktop with Windows OS.
User A is on Android Device and User B on Windows.

Scenario 1: 

Story settings of User A.

Who could reply to your stories has 3 options:
  • Your followers.
  • People you follow back
  • No one can reply
From User B account.
I turned on Web proxy.
I opened up the story of the User A who had just posted.
Now I start replying to his story and eventually turned on the proxy.

I clicked on the  Send button.
I also started to reply to the stories of few celebrities of India, but all good comments.😂

There was a POST HTTP Request that was sent from my browser to the Instagram Servers:

POST direct/***//**/send
Cookie: ajdslfkjalksdjfl;jasldjflajsdf
X-INSTAGRAM-Header: qlwejrjqwejjqw
X-CSRF:aljslkjflk;ajsldfj

text="USER"&repliedToMedia=[STORY_ID]

Now I sent this to repeater.

Now with User A's account I changed the settings to "No one can reply"

From User B I replayed the request in the Brup Repeater
The response was 400 Bad Request

At this time User A wasn't following User B and only User B is a follower of him and can see all the media.
Well, I changed the settings to People you Follow Back

Now also the same 400 Bad Request

Well done, that was good part of security.

Now I blocked User B.

Then the response was different it was  403 Forbidden
I didn't report to Facebook obviously since the security is perfect.

 That's all folks have a good day.. 

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