In a recent LinkedIn post, Chirag Goswami discusses the critical role of Application Programming Interfaces (APIs) in modern applications and, more importantly, the significant security risks they present. Goswami emphasizes that APIs, while foundational to everything from mobile apps to internal tools, are also prime targets for malicious actors. He outlines a comprehensive set of security layers designed to protect these vital digital conduits.
The Pervasive Threat to APIs
Goswami begins by framing APIs as the essential infrastructure of contemporary software, a fact that unfortunately makes them a focal point for cyber threats. He warns that even a single vulnerability can have far-reaching consequences. As Chirag Goswami states:
“APIs are the backbone of every modern app — which also makes them one of the biggest targets for attackers. A single weak endpoint can expose user data, break authentication, or open the door for abuse.”
This stark warning underscores the need for robust security measures, moving beyond optional add-ons to essential components of any digital strategy. Goswami’s post serves as a guide to understanding these necessary protections.
Core Layers of API Security Explained
To combat these threats, Chirag Goswami details several fundamental layers that organizations must implement. These layers work in concert to provide defense in depth, addressing authentication, data protection, and access control.
Authentication and Encryption
Goswami highlights the importance of modern authentication protocols that move away from traditional password sharing. He points to OAuth2 as a key technology for token-based authentication, allowing users to grant access without revealing their credentials. Furthermore, Goswami stresses the necessity of encryption for data in transit.
“HTTPS – Encrypts traffic end-to-end so no one can snoop or tamper with data in transit.”
For enhanced, phishing-resistant authentication, Goswami also mentions WebAuthn, which leverages biometrics or hardware keys, providing a more secure alternative to passwords.
Gateway, Firewalls, and Traffic Management
The concept of a centralized control point is also central to Goswami’s advice. He identifies the API Gateway as a crucial component for managing authentication, monitoring traffic, routing requests, and importantly, throttling or blocking malicious actors. According to Chirag Goswami, an API Gateway acts as:
“Central point for authentication, monitoring, routing, throttling, and blocking bad actors.”
Complementing the gateway, Goswami includes firewalls (both network and application layers) as essential for filtering out malicious traffic before it can even reach the core services. Rate limiting is also emphasized as a critical defense against brute-force attacks and credential stuffing, protecting public endpoints from abuse.
Access Control and Input Validation
Beyond network-level defenses, Goswami turns to controlling what authenticated users can do. He explains that authorization is vital to ensure users only access the data and functionalities they are permitted to, preventing misuse of privileges. Input validation is presented as the final line of defense, crucial for preventing attacks like injection by scrutinizing and sanitizing all incoming data before it is processed by the backend systems.
The Imperative of Strong API Security
Chirag Goswami concludes his post with a strong assertion: strong API security is no longer an option but a necessity. As APIs power an ever-increasing portion of our digital lives, the attack surface expands, making robust security measures paramount. Goswami’s insights provide a clear roadmap for organizations looking to fortify their API infrastructure.
📝 About This Content
This article is based on insights shared by Chirag Goswami on LinkedIn.
📅 Originally posted on January 28, 2026 | View original post on LinkedIn →