Not really conjecture:

> The company has found no evidence of unauthorized activity on Equifax’s core consumer or commercial credit reporting databases.

Since core business was unaffected (nobody hacked the mainframe), I guarantee you some crappy product they acquired got compromised.

And like it or not, you do give them permission to collect your personal data every time you authorize a creditor, utility or employer to run a credit check. Never sign up for utilities, loans, credit cards or get a job and then you'd have a case for privacy.