Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!think.com!barmar From: barmar@think.com (Barry Margolin) Newsgroups: comp.org.eff.talk Subject: Re: ANYONE CAN FIND MY CREDIT CARD BALANCE & LAST PMT Keywords: Credit Cards, Privacy Message-ID: <1991Apr9.020427.26222@Think.COM> Date: 9 Apr 91 02:04:27 GMT References: <959@camco.Celestial.COM> <24095@well.sf.ca.us> Sender: news@Think.COM Organization: Thinking Machines Corporation, Cambridge MA, USA Lines: 14 In article <24095@well.sf.ca.us> bparr@well.sf.ca.us (Barry L. Parr) writes: >The AT&T Universal card offers an 800 number that will give you the >balance on your Visa, using your Zip code as a PIN. This is the >next best thing to no security at all. That seems crazy to me. The Universal card already has a secret PIN associated with it, to be used when using it as a calling card. So why do they use a different, and easily-determined, PIN for balance information? -- Barry Margolin, Thinking Machines Corp. barmar@think.com {uunet,harvard}!think!barmar