Just as an update, I just called Titan because I did not know what credit card I used for the transaction. The lady I spoke to was very pleasant. I told her I received the letter from Titan regarding the "data security incident" and asked her if I gave her my name and address if she could tell me what credit card I used so I could monitor that card and go back and look at prior statements to see if I missed anything.
I was told Titan does not keep records of the credit card. I said if that is the case, what do I have to be vigilant about. She then asked if I could hold. After a short while she came back on the line and said the only info they keep is name and address, but the hackers could have intercepted info while the transaction was occurring and that is why they were alerting people.
She then advise me my purchase date and amount and called me by name. I never gave her my name. I assume they have to know who is calling by the phone number and she looked up my order. May explain some of the strange telemarketer calls I have been getting on my cell phone. If that is the worst of it, fine. I was just worried about credit card info.