I used XXXX to apply for a Citi credit card. After being approved for an amount, it gave me the option to perform a balance transfer and add an account. I added my XXXX account number and hit submit. Then it said I was idle and logged me out. I do n't know if my mastercard information is safe. I did not get any confirmation email from lendingtree or Citi. Almost seems like a phishing scam. 
