I run Breaking Bits Security (https://breakingbits.com https://breakingbits.com). We work with a lot of the YC community. Our rates are also a lot more sane tha

I run Breaking Bits Security (https://breakingbits.com https://breakingbits.com). We work with a lot of the YC community. Our rates are also a lot more sane than most of the larger consulting shops since we have no sales, marketing or account management teams to support :). We offer web application security assessments, mobile application security assessments and source code review. We also offer company training and reverse engineering services, but I'm assuming you are most interested in web app sec and source code review, correct? Check us out if you're interested, my email is in my profile. Good luck with whatever you choose.