This fellow discovered a vulnerability that allows someone to steal you 12 word backup phrase, restore your wallet and steal your coins: https://vxlabs.com/2017/06/10/extracting-the-jaxx-12-word-wallet-backup-phrase/
And doesn't sound like Jaxx CTO is planning to fix anytime soon: https://www.reddit.com/r/jaxx/comments/6gfl4d/easy_extraction_of_the_jaxx_12word_wallet_backup/diq8cs2/
I need to stop using Jaxx. Anyone have any other wallet suggestions?