> because he connected to it from an Internet address that he’d previously used to access a social media account registered in his name.
Is the implication here that the US gov has broad access to accounts IDs->IP address which access social media accounts? Or can the FBI/three letter agencies can go to Twitter/FB/etc (or some NSA db) and ask which accounts logged in via x IP address? Or, less conspiratorial, the investigators had some leads on x group of accounts -> got warrants for account IP addresses -> confirmed hypothesis.
Is the implication here that the US gov has broad access to accounts IDs->IP address which access social media accounts? Or can the FBI/three letter agencies can go to Twitter/FB/etc (or some NSA db) and ask which accounts logged in via x IP address? Or, less conspiratorial, the investigators had some leads on x group of accounts -> got warrants for account IP addresses -> confirmed hypothesis.