Believe this is a phishing scam, i.e., looking to steal identities. I have received several legitimate compromise letters and none of the letters have gone into such detail about the incident as this letter did.
Plus, my letter told me that I would be given one year of free Equifax Credit Watch 3 in 1 Alerts. The website the provided in the letter to obtain the free service, while looking like it is an Equifax website, is not...for I already have an Equifax account and no where can I locate such a website that branches off from the true Equifax website. Moreover, Equifax uses a secure (https) website to have you purchase a product from them.
If you doubt the legitimacy of the letter you received, then you should contact Wyndham directly using the phone numbers provided at
www.wyndham.com. Or, go to the credit monitoring agencies websites and use the phone numbers provided by there to inquire as to the legitimacy of this letter.