Receiving a password reset email doesn’t necessarily mean that your account has been hacked. For example, when someone is trying to log into their account or reset their password, they may mistype or misremember their email address or username and enter yours by mistake. Only people who know your Instagram password or click the login link in this email can log in to your account.
Emails from Instagram will only come from @mail.instagram.com. If the email you received did not come from us,
it may be a phishing attempt and you shouldn’t click any links or attachments.