Next move / MCTS 70-515

Question

Hello frinds, I have 2.6 years experince in software development on .net technologies. (1 yr in windows and 1.6 in web developement). I have some queries related to next career move in todays trends I am planing to appear for MCTS 70-515 exam, but i come to know that some employers and interviewers dont give much imprtance to it bacause anyone can pass exam by reading dumps avalilable on net What are the options available for software developer to become security expert . Please advice me which technolog / cetification will increase my market value. Thanks.