owasp-100709974-large.jpg?resize=700%2C248&ssl=1owasp-100709974-large.jpg?resize=700%2C248&ssl=1The Open Web Application Security Project (OWASP) is a non-profit organization dedicated to providing unbiased, practical information about application security. 
The OWASP Top 10 Web Application Security Risks was created  in 2010, 2013 and  2017 to provide guidance to developers and security professionals on the most critical vulnerabilities that are commonly found in web applications, which are also easy to exploit. These 10 application risks are dangerous because they may allow attackers to plant malware, steal data, or completely take over your computers or web servers.
Meeting OWASP Compliance Standards usually is the First Step Toward Secure Code.

2017 

OWASP Top 10 Application Security Risks – 2017

  • A1. Injection
  • A2. Broken Authentication
  • A3. Sensitive Data Exposure
  • A4. XML External Entities (NEW)
  • A5. Broken Access Control (MERGED)
  • A6. Security Misconfiguration
  • A7. Cross-Site Scripting
  • A8. Insecure Deserialization (NEW)
  • A9. Using Components With Known Vulnerabilities
  • A10. Insufficient Logging and Monitoring (NEW)

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Top 10
  • A1-Injection
  • A2-Broken Authentication and Session Management
  • A3-Cross-Site Scripting (XSS)
  • A4-Insecure Direct Object References
  • A5-Security Misconfiguration
  • A6-Sensitive Data Exposure
  • A7-Missing Function Level Access Control
  • A8-Cross-Site Request Forgery (CSRF)
  • A9-Using Components with Known Vulnerabilities
  • A10-Unvalidated Redirects and Forwards
For 2010, the OWASP Top 10 Most Critical Web Application Security Risks are:
  • A1: Injection
  • A2: Cross-Site Scripting (XSS)
  • A3: Broken Authentication and Session Management
  • A4: Insecure Direct Object References
  • A5: Cross-Site Request Forgery (CSRF)
  • A6: Security Misconfiguration
  • A7: Insecure Cryptographic Storage
  • A8: Failure to Restrict URL Access
  • A9: Insufficient Transport Layer Protection
  • A10: Unvalidated Redirects and Forwards

References:

OWASP

·        
 OWASP Risk Rating Methodology

·        
 Article on Threat/Risk Modeling

External

·        
 ISO 31000: Risk
Management Std

·        
 ISO 27001: ISMS

·        
 NIST Cyber Framework (US)

·        
 ASD Strategic
Mitigations (AU)

·        
 NIST CVSS 3.0

·        
 Microsoft Threat
Modelling Tool