View source for Threat Modeling Guide for Web Apps

==Full Title==
Threat Modeling Guide for Web Applications

Web applications are a prime target for security threats. A solid **threat modeling** process helps identify vulnerabilities early, ensuring your app remains secure.

==Understand the Application Architecture==
Before modeling threats, map out the web application’s architecture:  
- Identify **entry points** (e.g., login pages, APIs).  
- Define **trust boundaries** (e.g., database vs. front-end).  
- Document **components** (e.g., authentication systems, third-party integrations).  

===Tools===
- Diagrams.net (formerly draw.io)  
- OWASP Threat Dragon  
- Microsoft Threat Modeling Tool  

==Identify Potential Threats Using STRIDE== 
Use the **STRIDE** framework to categorize risks:  
{|  border="1" padding="2" width="888px"
| **Threat** || **Description** || **Example** 
|- 
| **Spoofing** || Impersonating an entity || Stolen credentials used to access admin portal 
|- 
| **Tampering** || Modifying data || Injection attacks manipulating database entries 
|- 
| **Repudiation** || Denying actions || Lack of logging allows attackers to erase footprints 
|- 
| **Information Disclosure** || Exposing sensitive info | Leaked API keys or SQL errors revealing database schema 
|- 
| **Denial of Service** || Disrupting service || DDoS attacks flooding the application 
|- 
| **Elevation of Privilege** || Gaining higher access || Bypassing access controls to become an admin 
|- 
|}
===Recommended Approach===  
- **Map attack vectors** for each STRIDE category.  
- **Assess impact** of each threat scenario.  

===Tools===  
- OWASP ZAP  
- Burp Suite  
- Mitre ATT&CK framework

==Define Mitigation Strategies==
To defend against threats:  
- **Authentication security:** Use **OAuth 2.1** or **FIDO2** for identity management.  
- **Input validation:** Implement **strict sanitization** to prevent SQL Injection & XSS.  
- **Encryption & Secure Storage:** Protect data at rest with AES-256 and in transit using TLS 1.3.  
- **Logging & Monitoring:** Use **SIEM tools** (Splunk, ELK) to detect suspicious behavior.  
- **Rate Limiting & Firewalls:** Deploy **WAF** (Cloudflare, AWS Shield) to prevent DDoS.  
===Tools===
- OWASP Dependency Check  
- SIEM (Splunk, Elastic Security)  
- Web Application Firewalls (ModSecurity, AWS WAF)  
==Validate & Iterate the Model==  
Threat modeling is **not a one-time process**—it should evolve as the application grows.  
- Conduct **regular security audits.**  
- Perform **penetration testing** (ethical hacking).  
- Update **threat models** when infrastructure changes occur.  
===Recommended Practices=== 
* Integrate threat modeling into **DevSecOps workflows**.  
* Use **CI/CD pipelines** for automated security checks.  
* Encourage **security awareness** among developers.  

==References==

[[Category: Threat]]