Security is a high priority, read more about how the SPoS system is 51% attack resistant in our whitepaper and the SPOS whitepaper.
https://v.systems/static/vsyswhitepaper.pdf
https://v.systems/static/sposwhitepaper.pdf

Bounty and airdrop have already been done.
News were posted on a couple of websites https://airdrops.io/v-systems/

To generate passive income you can have coins in your wallet and mint them. You can lease your coins to the supernode.

Check out the informative video on this topic here:
https://www.youtube.com/watch?v=4nNrNBcXIbQ

Supernode list:
https://vsysrate.com/

Coin leasing guide:
https://vsysrate.com/wiki/vsys-coin-leasing.html

Supernodes explained:
https://www.v.systems/supernode

Hope this answer provided you with some insight 

They are already trading on kucoin - https://www.kucoin.com/trade/VSYS-BTC
You can get more info regarding the team here - https://www.v.systems/team
Of course, there are many team members