Web security, authentication, and secure coding practices
94 posts
In the modern landscape of application development, security is not merely a feature; it is the foundation. For developers building complex, distributed systems, managing user identity and access control manually is often a recipe for disaster. This is where OAuth 2.0 and OpenID Connect (OIDC) co...
OAuth 2.0 revolutionized how we authorize access to web resources, but it introduced a significant security vulnerability: token theft. If an attacker obtains a valid access token, they can often use it to impersonate the user until the token expires, regardless of whether it was transmitted over...
For years, the authorization code flow was the gold standard for securing web applications. However, Single-Page Applications (SPAs) and native mobile clients introduced a unique challenge: they are "public clients." Unlike traditional server-side applications, these clients cannot securely store...
In the realm of application security, few responsibilities are as critical as the handling of user credentials. For decades, the industry relied on fast, one-way hash functions like MD5 and SHA-1. However, as hardware capabilities have evolved, particularly with the advent of GPUs and specialized...
When designing your OAuth2 flow, always use the Authorization Code Grant flow with PKCE (Proof Key for Code Exchange) for public clients to prevent authorization code interception attacks. Avoid the Implicit Grant flow entirely, as it exposes access tokens in the URL fragment.
In the evolving landscape of cloud-native application development, the traditional "castle-and-moat" security model has become obsolete. With the proliferation of microservices, containers, and ephemeral workloads, the internal network perimeter has effectively vanished. This shift necessitates a...
The traditional security model relied heavily on a strong network perimeter. Inside the castle walls, everything was trusted; outside, everything was malicious. In the era of microservices, containerization, and multi-cloud deployments, this "castle-and-moat" approach has become obsolete. With se...