In current scenario, a lot of crowdsourcing systems have come out and lead to numerous successful crowdsourcing systems like Defense Advanced Research Projects Agency (DARPA), pay4bugs, Wiki-pedia, Waze, bugfinders, Facebook, Amazon, etc. Security concern in the software application domain is without difficulty browbeaten by the attackers. In S/w engineering, crowdtesting has acquired increased ... [Show full abstract] interest and acceptance, particularly among developer and smaller organizations. In this paper, we stipulate a comprehensive survey of the use of crowdsourcing in software engineering and the importance of crowdsourcing in S/w engineering with respect to software testing is also elaborated. Further, we analyze the problems related to security point of view. This process maximizes the success of the software system. According to the recent trend, the croudtesting is gaining cognizance from the industries, experts and research communities. Hence implications of these flaws in the performance of software models' have been explored.