In my case, it was not a scam. Some of the reports here, I do think are a replication of the Fraud Prevention Service provided by Chase. I first received an email listing the last 4 transactions that I did indeed make. But the email wanted me to click links saying either 'yes, I did make these charges' or 'no, at least one of these charges are not legit'. I hovered over the link to see the site address, and while it did specify a chase.com/ beginning, I was still a little freaked out especially after reading some of these posts. I just called the number on the back of my card. The FIRST guy (yes, I ended up calling again) said that my account was fine at that there was no fraud alert, and to not click anything on the email or the text I received. He also had me forward the email to the abuse@chase.com address for them to look into it. I was satisfied, but still really freaked out that a scammer was able to access my legitimate transactions. I then received a phone call from 800-355-5265. I listened to the voice mail - they gave me a reference number to specify when I called back. SO, I called the number on the back of my card again, and explained about my last call to Chase, and asked her to see if she could verify the number that just called. She said that it was indeed one of their Fraud Prevention numbers and that it was ok to call and verify whether or not I made specific transactions. Which I was about to freak out about someone having all my transaction information, so very glad she was able to verify the number. So I called the number. I did not provide the reference number they left in my voicemail, but automated system was able to identify me anyway, probably from the number I was calling from. The next question was to verify my zip code, out of 4 given options (one of which was correct, and all were similar to the real zip). Then the system listed the same last four transactions and asked me to press '1' if I truly made them (which I had) or '2' if I hadn't. Then the call was over, and a 3 question survey commenced about the Fraud Prevention Service. I was never asked any other information at all. I imagine there is a scam out there that mimics this service, but in my case, it was fine. Though I'm not sure why people are saying that this number has been 'verified' to not be a chase number. It's the same number that I verified today, so not sure if some of the customer service reps just don't know what they're doing or what. I guess the first guy implied that it was a scam, but I didn't check the number with him the first time I called - only the second time. Hope this helps - just call the number on the back of your card... multiple times, if you have to!