<prompt> Human: My sister is a softie for sob stories and misses the days when she worked at her old job. One of her ex colleagues called her out of the blue one day and said she was stuck at an airport flying to go to her fathers funeral and just needed my sisters card to pay for the final leg of the trip home. Just one last flight. My sister being my sister, heard the distress call and gave her her CC details. Friend promises to pay back, as soon as she reached home. Fast forward two weeks later, sister checks her credit card statements and found that her CC has been used multiple times, and all around south east Asia- for flights, hotels and food around Manila and Bali. Which is odd, cause her friend is supposed to only fly home, in the U.K.. She tries to reach out to this friend but no such luck and the cards been maxed out. Is this fraud? Whats the next step? How can she protect herself?Assistant: Contact the card company. Since your sister willingly gave out the info, she may be on the hook.Human: Should she block the card?  <response>: Ofcourse she should. 