@sdrgay, does Robinhood offer desktop platform for option trading? Or do they still only allow trading from a mobile app? I think the absence of desktop app can be a deal breaker for most of the folks here who actively trade options.
As for vulnerability, Robinhood uses Apex as their clearing firm. The same do other firms offering commission free US option trading: Tradier, TastyWorks e.t.c. So your money are actually handled by Apex. The level of funds security should be almost the same among mentioned brokers.