Instagram is warning users of popular social-media-management tools like Buffer and Hootsuite that t

Instagram is sending warnings to users of popular social-media-management services, telling them their accounts have been "compromised." Instagram is trying to crack down on malicious behavior and rule breaking after a series of Business Insider investigations into companies that openly flouted its rules prohibiting practices like data scrapping. Now users of popular services, including Buffer and Hootsuite, have been sent messages informing them they've used rule-breaking tools. But the...