WARNING: Turns out checking to see if you are affected and/or signing up for the credit monitoring you waive all rights to sue and are forced into binding arbitration.

Edit: They did update the site with this...

2). NO WAIVER OF RIGHTS FOR THIS CYBER SECURITY INCIDENT In response to consumer inquiries, we have made it clear that the arbitration clause and class action waiver included in the Equifax and TrustedID Premier terms of use does not apply to this cybersecurity incident.