Security tokens - a new form of crypto tokens that gives a new suite for the ever known crowdfunding model ICO. Yes, ICO was popularly known for providing utility tokens. But to increases the security from investors side, ICO's adopt security tokens, and it becomes a new crowdfunding model STO(security token offerings). bitdeal becomes the first blockchain development company who adopts security token offerings as services. You can get security token offering services at bitdeal.