FILE - In this Tuesday, March 3, 2009 file photo German Chancellor Angela Merkel holds a cell phone with a photo of her on the screen during her opening walk at the CeBIT in Hanover, northern Germany. Cybersecurity researchers in Europe say they've discovered a flaw in an encryption algorithm used by cellphones that may have allowed attackers to eavesdrop on some data traffic for more than two decades. In a paper published Wednesday, researchers from Germany, France and Norway said the flaw affects the GPRS mobile data standard. (AP Photo/Joerg Sarbach, file)