In 25 years of dealing with Equifax, they have always been a train wreck of inaccuracy. Of the 143 million people breached (come on, at that number, thats pretty much every American with a current credit history) I'll guarantee millions of those files are already a mess. 

Governments should not be entrusting this kind of data gathering to private entities. Equifax specifically is an understaffed profit machine that puts the consumer they exploit way on the back burner. Securing data from hacks is not profitable. it takes people and money. Not in Equifax' business plan. 

 Fixing inaccuracies is not profitable, so ever their consumer care people are pushed to sell people and companies their own inaccurate reports so the consumer can fix problems. There is literally no incentive to be accurate, as it would disappear a revenue stream. 

Equifax should have been shut down long before this breach.