Security expert Rich Mogull, writing for TidBITS, has a good—if sobering—overview of the long term effects of the Equifax hack:
Until the system changes, there isn’t much you can do beyond a credit freeze, and that comes with some negatives, especially if you need to apply for credit or a job. Perhaps this incident will spur some legislative changes. The odds are high that more than a few politicians are also now exposed, and self-interest is a powerful motivator.
It’s hard to overstate just how damaging this attack is. We haven’t even seen the real effects yet.