The hack that compromised Equifax was bad enough, but its response only seemed to make things worse. Even the website that verified the potential threat to your data left many people wondering. Equifax wants to remove any doubt, though. In the wake of a just-completed forensic investigation by security partner (and sometimes foe) Mandiant, Equifax has announced that it's mailing written notices to everyone who was confirmed as affected since it disclosed the hack on September 7th. That's no mean feat when 2.5 million more Americans have been added to the tally (which now stands at 145.5 million affected) as a result of the investigation. The website should reflect the additional hack victims no later than October 8th, so you might not have to wait for a letter to find out whether or not you're part of this newer batch.