CyberShield

  Welcome back to our Cybersecurity series! In our 4th post, we discussed the basics of IDOR. Today, for our 15th post, we are leveling up to explore a more sophisticated side of Broken Access Control: Insecure API Exploitation . As modern web applications move towards a "Mobile-First" or "Single Page Application (SPA)" architecture, APIs (Application Programming Interfaces) have become the primary target for hackers. What is an Insecure API? An API is a bridge that allows different software components to communicate. If this bridge doesn't have a security guard (Authorization), an attacker can send malicious requests to the API and trick the server into leaking sensitive data or performing unauthorized actions. Common API Vulnerabilities BOLA (Broken Object Level Authorization): Similar to IDOR, but specifically targeting API endpoints like /api/v1/users/123 . BFLA (Broken Function Level Authorization): When a regular user can access administrative API functi...

Introduction In modern web and cloud environments, not every security issue comes from complex exploits. In fact, many real-world breaches happen due to simple configuration mistakes. This is known as Security Misconfiguration — a silent but extremely dangerous vulnerability. What is Security Misconfiguration? Security Misconfiguration occurs when a system, server, application, or cloud service is not properly configured in a secure way. Even if the application code is secure, incorrect settings can expose sensitive data or even full system access. Why Does It Happen? Security misconfiguration usually occurs due to: Default Settings Left Unchanged Using default credentials like: admin/admin root/root Unused Services Still Active Exposed endpoints such as: /admin /debug unused ports or APIs Verbose Error Output Technical errors revealing: file paths database structure system information Missing Security Headers Lack of protections like: HSTS Content Security Policy (CSP) Cloud Storage M...

Introduction In this part of the cybersecurity series, we explore one of the most critical web vulnerabilities: Server-Side Request Forgery (SSRF). With the rise of cloud platforms such as AWS, Azure, and Google Cloud, SSRF has become a high-impact vulnerability frequently targeted in bug bounty programs. What is SSRF? Server-Side Request Forgery (SSRF) is a vulnerability that allows an attacker to force a server to make requests to unintended locations. In simple terms, the attacker uses the server as a proxy to access internal or restricted resources. How SSRF Works Many applications fetch data from external URLs. For example: fetch("https://trusted-site.com/data.json") If user input is not properly validated, an attacker can modify the request: fetch("http://127.0.0.1/admin") or: fetch("http://192.168.1.1/config") Because the request originates from the server, internal systems may trust it and return sensitive data. Types of SSRF Basic (In-band) SSRF T...

Introduction After learning vulnerabilities like SQL Injection and XSS, the next important concept in web security is Broken Access Control, specifically IDOR (Insecure Direct Object Reference). According to the OWASP Top 10, Broken Access Control is one of the most critical security risks in modern web applications. What is IDOR? IDOR (Insecure Direct Object Reference) happens when a web application uses user-supplied input to directly access objects without proper authorization checks. In simple terms, the application allows access to data by changing an ID without verifying whether the user has permission. Simple Real-World Example Your profile URL might look like: https://example.com/my-account?id=1005 If you change it to: https://example.com/my-account?id=1006 and you can view another user’s private data, then the application is vulnerable to IDOR. Why IDOR is Dangerous Data Exposure Attackers can access sensitive information such as emails, phone numbers, and addresses. Unauthori...