since a while I'm having troubles with instagram, my password is modified by someonelse... 

Looking forward to this, i've discovered that an email@ gmail.com can be used with a 'dot' in the middle and it is still sent to the 'not dot email' : 

example: my mail : lowliv@gmail.com can be used for login to a website. 
a Hacker can create a mail like low.liv@gmail.com (with another name and surname) and the mail will be the same! 

I can send emails to all my google's account adding a '.' in and I still receiving the mail. 

So If I want to hack an account using gmail, I just have to create a similar account but with a 'dot (.)' inside and I will be able to reset any password! 

Well done !

(i'm waiting  on a feedback from your team )

Kind Regards 
Lowliv