Security Checkup will pop-up on Instagram users’ smartphones whenever the social network detects suspicious activity associated with an account, or believes it may have been compromised. Facebook-owned Instagram has also taken the opportunity to reiterate the various security measures that can be taken to harden the security of accounts. The social network will soon be supporting two-factor authentication through WhatsApp in some countries. Instagram also advises users to ensure that the email addresses and phone numbers associated with their accounts are correct and up to date.”]