There was a virus found in Jaxx.io wallet - anyone with 10 second access to you network can get all keys to your wallets due to seed Jaxx generates.
people are really doin this this is very bad for our crypto world.
Some people already claimed their coins were stolen. Full text - https://vxlabs.com/2017/06/10/extracting-the-jaxx-12-word-wallet-backup-phrase/
read full news : https://steemit.com/bitcoin/@kingscrown/psa-freewallet-and-jaxx-getting-robbed-over-10-million-usd-stolen