Application Security (AppSec) / Product Security
Security is not always accorded the highest priority when it comes to products built by start-ups & no one can be blamed for it, because product-market fit and essential feature development take much higher precedence. Before it's too late, product security also needs to be closely looked at. Else, the consequences suffered can be critical including data breaches, loss of business, theft of IP and so on. The good news is that application/product security can be incorporated or related issues can be fixed at any time. If architectural or design changes aspects of security are unearthed, the cost of fixing the same becomes higher and the cost to make code changes due to vulnerabilities is relatively smaller. Expert advice on these matters help you maneuver this unknown territory rather deftly.