This shouldn't be different than putting private keys in decentralized exchange, if I am not wrong. So either use throwaway address or don't use platform at all.
Just keep this in mind, accusing bountyhunters.io of scam is accusing many projects and startups of being scam, as some of them share the same developers, team members, advisors...
@bountyhunters do you escrow bounty rewards?
We currently have an option to escrow bounty rewards, but it's up to bounty hosts to use it (as not every project have the token launched on pre-ICO marketing stage). Anyway, escrow option is preferable for bounty hosts, as they attract more professional bounty hunters.
We are planning to move 100%-escrowed system in the future, as well as to add more functional allowing to set larger variety of marketing tasks.
Note, that we personnaly communicate with each bounty host and we provide overall audit of each project, minimizing risks of no-payments.