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The OWASP Prevention Cheat Sheet Series was created to provide a concise collection of high value information on specific web application security topics. These cheat sheets were created by multiple application security experts and provide excellent security guidance in an easy to read format.
OWASP Cheat Sheets Project Homepage
Developer Cheat Sheets (Builder)
- Authentication Cheat Sheet (Spanish)
- Choosing and Using Security Questions Cheat Sheet
- Clickjacking Defense Cheat Sheet
- C-Based Toolchain Hardening Cheat Sheet
- Cross-Site Request Forgery (CSRF) Prevention Cheat Sheet
- Cryptographic Storage Cheat Sheet
- DOM based XSS Prevention Cheat Sheet
- Forgot Password Cheat Sheet
- HTML5 Security Cheat Sheet
- Input Validation Cheat Sheet
- JAAS Cheat Sheet
- Logging Cheat Sheet
- .NET Security Cheat Sheet
- OWASP Top Ten Cheat Sheet
- Password Storage Cheat Sheet
- Pinning Cheat Sheet
- Query Parameterization Cheat Sheet
- Ruby on Rails Cheatsheet
- REST Security Cheat Sheet
- Session Management Cheat Sheet
- SAML Security Cheat Sheet
- SQL Injection Prevention Cheat Sheet
- Transaction Authorization Cheat Sheet
- Transport Layer Protection Cheat Sheet
- Unvalidated Redirects and Forwards Cheat Sheet
- User Privacy Protection Cheat Sheet
- Web Service Security Cheat Sheet
- XSS (Cross Site Scripting) Prevention Cheat Sheet
Assessment Cheat Sheets (Breaker)
- Attack Surface Analysis Cheat Sheet
- XSS Filter Evasion Cheat Sheet
- REST Assessment Cheat Sheet
- Web Service Security Testing Cheat Sheet
Mobile Cheat Sheets
OpSec Cheat Sheets (Defender)
Draft Cheat Sheets
- Access Control Cheat Sheet
- Application Security Architecture Cheat Sheet
- Business Logic Security Cheat Sheet
- PHP Security Cheat Sheet
- Secure Coding Cheat Sheet
- Secure SDLC Cheat Sheet
- Threat Modeling Cheat Sheet
- Web Application Security Testing Cheat Sheet
- Grails Secure Code Review Cheat Sheet
- IOS Application Security Testing Cheat Sheet
- Key Management Cheat Sheet
- Insecure Direct Object Reference Prevention Cheat Sheet
- Content Security Policy Cheat Sheet
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| RELEASE(S) INFO|
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Ensure all entities go through an appropriate and adequate form of authentication. All the application non-public resource must be protected and shouldn't be bypassed.
For more information, check Authentication Cheat Sheet
Use secure session management practices that ensure that users authenticated users have a robust and cryptographically secure association with their session.
For more information, check Session Management Cheat Sheet
Ensure that a user has access only to the resources they are entitled to. Perform access control checks on the server side on every request. All user-controlled parameters should be validated for entitlemens checks. Check if user name or role name is passed through the URL or through hidden variables. Prepare a ACL containing the Role-to-Function mapping and validate if the users are granted access as per the ACL.
For more information, check Access Control Cheat Sheet
Input validation is performed to minimize malformed data from entering the system. Input Validation is NOT the primary method of preventing XSS, SQL Injection. These are covered in output encoding below.
For more information, check Input Validation Cheat Sheet
Output encoding is the primary method of preventing XSS and injection attacks. Input validation helps minimize the introduction of malformed data, but it is a secondary control.
For more information, check XSS (Cross Site Scripting) Prevention Cheat Sheet.
Ensure that adequate controls are present to prevent against Cross-site Request Forgery, Clickjacking and other 3rd Party Malicious scripts.
For more information, check Cross Site Request Forgery
Ensure that all the applications pages are served over cryptographically secure HTTPs protocols. Prohibit the transmission of session cookies over HTTP.
For more information, check Transport Protection Cheat Sheet
Ensure that all the security related events are logged. Events include: User log-in (success/fail); view; update; create, delete, file upload/download, attempt to access through URL, URL tampering. Audit logs should be immutable and write only and must be protected from unauthorized access.
For more information, check Logging Cheat Sheet
Ensure that the size, type, contents and name of the uploaded files are validated. Uploaded files must not be accessible to users by direct browsing. Preferably store all the uploaded files in a different file server/drive on the server. All files must be virus scanned using a regularily updated scanner.