WARNING***WARNING***WARNING
If you go to Equifax's site on the breach (either from the FAQ or any of the consumer pages), there is a big button that says "Enroll to Protect and Monitor Credit -- Free". It takes you to Equifax's
TrustedID service which is simply their proprietary monitoring product.
DO NOT CLICK OR SIGN UP! YOU WILL WAIVE YOUR RIGHTS TO ANY LAWSUITS OR FUTURE LEGAL ACTION AGAINST EQUIFAX AS THE RESULT OF THIS BREACH!
After a few class-action suits, they *may* have taken it out, but I just looked at the T's and C's on Friday. I don't see any language that would indicate this. Use a monitoring service from someone else or, as others have said, simply freeze your credit.
LINK from Marketwatch
I work in the industry and have worked with Equifax for over a decade now. I cannot comment on this specific incident any more than Brian Krebs has. However, there are sooo many crazy side stories ranging from the CSO's BA and MFA in music to the real story around the sale of stock (which wasn't as sinister as the media made it out to be).