My account was hacked and the email was changed but when using

I got a message from Instagram that my account had been hacked and the address changed. How could this happen? What do I need to do to keep it from happening again?

My AAdvantage Account was Hacked Multiple Times this Week! Scary Stuff & AA No Help!

My account was hacked and the email was changed but when using facebook identify it says we don't recognize your device although i've been logged in on facebook with this device before

Instagram Got Hacked & Email Changed – Steps To Recover Your Account

I Am Sorry To Inform You But Your Device Was Hacked Email Scam - Removal and recovery steps (updated)

How to get back into a hacked Facebook account - The Washington Post

My facebook account was hacked and its email was changed please help : r/facebook

Account hacked (email changed) - The Spotify Community

Facebook Account Hacked Facebook Hacked Recovery

My Facebook Account is Hacked & Email Changed! What to Do?

Hacked account whos changed the email and phone : r/facebook

Facebook hacked and contact information changed [Solved]

3 Ways to Recover a Hacked Facebook Account - wikiHow