In another talk at Black Hat, researchers Don Bailey and Nick Depetrillo showed how they were able to take bits and pieces of mobile information (such as the IMSI), Caller Display Name (CNAM) and the Home Location Register (HLR) to put together a mobile White Pages that would allow them to stalk someone.

FORBES: Cell Phone Snooping: Cheaper And Easier Than Ever

Sophia Gennusa, Oona Laurence, Bailey Ryon and Milly Shapiro are an exuberant bunch, barely able to sit still during a break in rehearsal as they giggle over their love of unicorns, marshmallows, pie, gummy bears and french fries.

WSJ: The 4 girls who play 'Matilda' bond offstage