An anonymous reader writes: Google has once again upped the ante for bug hunters concentrating on Chrome, and is now offering $100,000 to anyone capable of achieving a compromise of a Chromebook or Chromebox (the desktop variant of the Chromebook laptop) with device persistence in guest mode (i.e. guest to guest persistence with interim reboot, delivered via a web page). From Google's Monday announcement: Last year we introduced a $50,000 reward for the persistent compromise of a Chromebook in guest mode. Since we introduced the $50,000 reward, we haven't had a successful submission. That said, great research deserves great awards, so we're putting up a standing six-figure sum, available all year round with no quotas and no maximum reward pool.