Curious as to why you think it's a bubble. Israeli startups have had many successful exits in recent years, although mostly acquisitions, and not many big flops.
It's just my unsubstantial opinion. Too many players raising too much money in a consolidated market. Bar some notable exceptions (NSO), this herd of misguided lemmings has one way out - acquisition by Checkpoint/Imperva/SalesForce.
But maybe I'm wrong and we'll see 100 Mobileyes in the coming decade.