SCAM.......Just called Chase security.  Don't give them crap.  

I just got this call a few minutes ago. The same automated call with the access # and telling me to call 866-355-3744 if I did not request it.  I called it... and it did sound exactly like Chase.  But I hung up and called the number on the back of my debit card to be safe.  The rep consulted with the security/fraud department and they were able to figure out that it was a REAL call, BUT not for my account.  Someone else had requested an access number, mistakenly put in my phone number, then they requested it again with their correct number.  So if they are telling me all is well... is it really???  Seems Chase told some of you it was a scam!!

Yep, I am an idiot, I returned the call....the answering matrix seemed legitimate, I choose to talk to a Chase representative and then it went down hill.
I did not give them my Chase card number...nope, instead I gave them my SSN, STUPID!!
They asked follow up questions including my street address, then the give away they asked three questions relating to my "public" record. When they asked me confirm my daughter's month of birth I knew I had been scammed, that maybe public record, it was not part of any credit application or security question I had established. GREAT, now what.
I have spent the morning talking with Chase ( this is a scam), my bank, my credit union and soon I have to tell my husband how stupid I was.
CHANGE your Chase user name (they had that), change your password, notify Experion, Equifax and Transunion that your credit maybe compromised. Get a credit report today, next month, the next month and the next month.
Save yourself my headache....DON'T RETURN THE CALL.......

I got the the call today (9/30/2013).  

The call came to my cell phone from 877-242-7372.  Since I didn't know the number, I let it go to v/m.  I checked the message and an automated voice says my new Chase Online Identification Code is..... and then tells me to call 866-355-3744 if I did not request this.   I got a text message at the same time.  

1.  I don't have any Chase accounts and I have a credit monitoring service.  So, I would know if someone tried to open an account with my info.

2.  The "Online Identification Number" in the voice mail did not match the one that they texted me.

SCAM - SCAM - SCAM    

Received call....and just like the others above ....saying they were Chase and was told to call 866-355-3744 with an access code....glad I found this site. (Aug 2013)

Just got a call this morning for the same thing.  Showed up as "Chases Internet" on my phone with number 877-242-7372.  I'm glad I found this info on this website and can't believe Chase isn't looking into this fraud.  I will be reporting this as well.

Just got the message on my phone this afternoon. Glad I googled it and found these posts! I do love the fact that someone above blew their whistle into the phone! Well deserved -Those folks that are part of this scam should be ashamed of themselves!

Scam - ignore this if you get it
(still getting in Oct 2012)

THIS IS A SCAM!!! DO NOT PROVIDE THEM WITH ANY INFORMATION. CALL YOUR LOCAL CHASE BANK AND SPEAK WITH A BANKER. THIS IS NOT A CHASE #.

THE # THEY CALLED FROM WAS   877-226-5663

THE # THEY ASKED TO RETURN CALL IF YOU DID NOT REQUEST PIN FOR ACCESS TO ACCOUNT:
866-355-3744

I don't know why chase says it's number, and it's not listed on chase.com. But, i requested code from chase (online) and I received call from this number. Anyway, i called this number and I reached chase rep.

Why doesn't Chase do anything about this # it's been around for what seems like 2+ years how sad.

just fell for this.  my stomach hurts

got a call about activation code for chase which i did not request.  called back and got into a voice prompt system.  nobody answered.  looks like a phishing scam.

**SCAM** I got the same call as described above about a confirmation code. I looked up the number here and saw that it was a scam.They finally answered the phone after 3 minutes on hold.  When she answered she asked me for my full account number. I delayed her a bit saying I was looking for my wallet. I mentioned how this call could be mistaken for a scam, since I hadn't requested a change to my account. She said they do this for their customers' protection. We went back and for a while since I asked her to give me my address and other information since they called me and I had a confirmation code. She came up with a lame excuse that they aren't allowed to give out any information because protecting their customers information is important to them. When I accused her of being a scam artist she said I should go to my local branch of JP Morgan Chase. I thought that was rather clever, but in the end it still didn't help her. You see, I wasn't looking for my wallet. I was looking for my 120db whistle. I found it and gave her a blast. She was rather upset, so while I still had her on the line I gave her another. I hung up and called Chase and they confrmed the call was not affiliated with the company.

Chase is not offiliated with this number.  I have reported this to Equifax and to the Federal Trade Commission

This is DEFINITELY a phishing operation. I emailed Chase through my secure online connection and they emphatically stated that the 866-355-3744 is NOT a Chase number and they promised to look into it. The idiot Scott's comments above lead me to believe that he is one of the perpetrators. DO NOT, call this number as nothing good can possibly come from this, except giving someone the information they might need to access your account.

Supposedly a message from chase confirmation which I did not request, "If you did not request this confirmation code please call 866-355-3744". Scam probably.