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| − | <b>SECURITY ARCHITECTURE CHEAT SHEET FOR INTERNET APPLICATIONS</b><br/>
| + | Moved to [[Application Security Architecture Cheat Sheet]]. |
| − | This cheat sheet offers tips for the initial design and review of an application’s security architecture.<br/>
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| − | Originally authored by [http://www.zeltser.com Lenny Zeltser]<br/>
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| − | original version [http://www.zeltser.com/security-management/security-architecture-cheat-sheet.pdf http://www.zeltser.com/security-management/security-architecture-cheat-sheet.pdf]<br/>
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| − | == #1: BUSINESS REQUIREMENTS ==
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| − | ; Business Model
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| − | : What is the application’s primary business purpose?
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| − | : How will the application make money?
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| − | : What are the planned business milestones for developing or improving the application?
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| − | : How is the application marketed?
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| − | : What key benefits does application offer its users?
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| − | : What business continuity provisions have been defined for the application?
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| − | : What geographic areas does the application service?
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| − | ; Data Essentials
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| − | : What data does the application receive, produce, and process?
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| − | : How can the data be classified into categories according to its sensitivity?
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| − | : How might an attacker benefit from capturing or modifying the data?
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| − | : What data backup and retention requirements have been defined for the application?
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| − | ; End‐Users
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| − | : Who are the application’s end‐users?
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| − | : How do the end‐users interact with the application?
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| − | : What security expectations do the end‐users have?
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| − | ; Partners
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| − | : Which third‐parties supply data to the application?
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| − | : Which third‐parties receive data from the applications?
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| − | : Which third‐parties process the application’s data?
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| − | : What mechanisms are used to share data with third‐parties besides the application itself?
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| − | : What security requirements do the partners impose?
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| − | ; Administrators
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| − | : Who has administrative capabilities in the application?
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| − | : What administrative capabilities does the application offer?
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| − | ; Regulations
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| − | : In what industries does the application operate?
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| − | : What security‐related regulations apply?
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| − | : What auditing and compliance regulations apply?
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| − | == #2: INFRASTRUCTURE REQUIREMENTS ==
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| − | ; Network
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| − | : What details regarding routing, switching, firewalling, and load‐balancing have been defined?
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| − | : What network design supports the application?
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| − | : What core network devices support the application?
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| − | : What network performance requirements exist?
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| − | : What private and public network links support the application?
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| − | ;Systems
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| − | : What operating systems support the application?
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| − | : What hardware requirements have been defined?
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| − | : What details regarding required OS components and lock‐down needs have been defined?
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| − | ; Infrastructure Monitoring
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| − | : What network and system performance monitoring requirements have been defined?
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| − | : What mechanisms exist to detect malicious code or compromised application components?
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| − | : What network and system security monitoring requirements have been defined?
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| − | ; Virtualization and Externalization
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| − | : What aspects of the application lend themselves to virtualization?
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| − | : What virtualization requirements have been defined for the application?
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| − | : What aspects of the product may or may not be hosted via the cloud computing model?
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| − | == #3: APPLICATION REQUIREMENTS ==
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| − | ; Environment
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| − | : What frameworks and programming languages have been used to create the application?
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| − | : What process, code, or infrastructure dependencies have been defined for the application?
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| − | : What databases and application servers support the application?
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| − | ; Data Processing
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| − | : What data entry paths does the application support?
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| − | : What data output paths does the application support?
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| − | : How does data flow across the application’s internal components?
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| − | : What data input validation requirements have been defined?
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| − | : What data does the application store and how?
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| − | : What data is or may need to be encrypted and what key management requirements have been defined?
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| − | : What capabilities exist to detect the leakage of sensitive data?
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| − | : What encryption requirements have been defined for data in transit over WAN and LAN links?
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| − | ;Access
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| − | : What user privilege levels does the application support?
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| − | : What user identification and authentication requirements have been defined?
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| − | : What user authorization requirements have been defined?
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| − | : What session management requirements have been defined?
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| − | : What access requirements have been defined for URI and Service calls?
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| − | : What user access restrictions have been defined?
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| − | : How are user identities maintained throughout transaction calls?
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| − | ;Application Monitoring
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| − | : What application auditing requirements have been defined?
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| − | : What application performance monitoring requirements have been defined?
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| − | : What application security monitoring requirements have been defined?
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| − | : What application error handling and logging requirements have been defined?
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| − | : How are audit and debug logs accessed, stored, and secured?
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| − | ;Application Design
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| − | : What application design review practices have been defined and executed?
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| − | : How is intermediate or in-process data stored in the application components' memory and in cache?
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| − | : How many logical tiers group the application's components?
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| − | : What staging, testing, and Quality Assurance requirements have been defined?
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| − | == #4: Security Program Requirements ==
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| − | ; Operations
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| − | : What is the process for identifying and addressing vulnerabilities in the application?
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| − | : What is the process for identifying and addressing vulnerabilities in network and system components?
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| − | : What access to system and network administrators have to the application's sensitive data?
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| − | : What security incident requirements have been defined?
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| − | : How do administrators access production infrastructure to manage it?
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| − | : What physical controls restrict access to the application's components and data?
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| − | : What is the process for granting access to the environment hosting the application?
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| − | ;Change Management
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| − | : How are changes to the code controlled?
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| − | : How are changes to the infrastructure controlled?
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| − | : How is code deployed to production?
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| − | : What mechanisms exist to detect violations of change management practices?
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| − | ;Software Development
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| − | : What data is available to developers for testing?
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| − | : How do developers assist with troubleshooting and debugging the application?
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| − | : What requirements have been defined for controlling access to the applications source code?
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| − | : What secure coding processes have been established?
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| − | ;Corporate
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| − | : What corporate security program requirements have been defined?
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| − | : What security training do developers and administrators undergo?
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| − | : Which personnel oversees security processes and requirements related to the application?
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| − | : What employee initiation and termination procedures have been defined?
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| − | : What application requirements impose the need to enforce the principle of separation of duties?
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| − | : What controls exist to protect a compromised in the corporate environment from affecting production?
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| − | : What security governance requirements have been defined?
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