The Israeli founders of cloud security firm Wiz have more than doubled their fortunes over the past year, according to Forbes' list of billionaires. With a net worth of about $2.1 billion each, the Wiz co-founders were already part of the ranking after entering the billionaires club last year. This year, they were joined by four newcomers, bringing the total number of Israelis on the Forbes list to 41. The highest-ranked Israeli was Miriam Adelson, the widow of casino magnate Sheldon Adelson, with a net worth of $32.1 billion.