Hotel worries about “rate integrity” are as old as the internet. But lately, hotels appear to be paying more attention. Some have begun to administer penalties to online travel agencies and wholesalers they believe aren’t being above board.

To sleuth who’s to blame, hotels are increasingly using new tech tools. Fornova is one startup, based in Yokne’am Illit, Israel, that made its name by monitoring and benchmarking rates online and has a sideline in helping fight rogue rates.