A flickering QR code on a Bengaluru billboard led users to redenvelope.club, a site with a red envelope graphic and a ...

Our techniques are implemented in KLEE-CL, a tool based on the symbolic execution engine KLEE that supports symbolic reasoning on the equivalence between expressions involving both integer and ...

Ads display a QR code that can be scanned to access a digital scratch-off sweepstakes with prizes including movie tickets, flight vouchers and more.