<prompt> Human: This was extremely unusual and I wanted to warn other users.I had an instance of fraud occur on my card and I was sent another in the mail. When the credit card arrived, there was a sticker on the card inside the envelope with a phone number to activate it. I called the number and was transferred to a foreign call center that asked for a large number of personal details including the card number, expiry date, and 3-digit code. They also told me I won some vitamins and would transfer me to the activation specialist.Once I was transferred and the process continued and they wanted my social security number, I hung up because this whole process was suspicious. BUT I CALLED THE NUMBER STICKERED TO MY CARD.Not one day later, a fraudulent charge for vitamins was attempted with my new card.How did this even happen? Thats a major security breach if a fraudulent sticker arrives on my card in the mail. I wanted to warn anyone who is activating their card - call the number you are familiar with and is printed on the card itself, not the activation sticker - just in case this becomes widespread.Edit: Some possibilities that have been discussed:A. Mail interception and replacement of the sticker before the card arrived to me.B. A compromised call or distribution center placing a fraudulent sticker on the original card.C. Calling the wrong area code 800 vs. 888, with a scammer intending to receive and divert these calls knowing what the caller would be intending.All very interesting and I appreciate the feedback. Regardless of the origin, Ill be calling the main line or doing it online from now on!  <response>: Double check the number, thats the most likely case. If they were going to intercept your mail and replace the sticker, why wouldnt they just take the card?If it makes you feel any better, I made that mistake once calling my states home energy conservation department - I called the number, then was getting all these weird ads. I started to freak out, then realized I swapped two numbers when dialing. 