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Difference between revisions of "Application Security Architecture Cheat Sheet"

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= DRAFT CHEAT SHEET - WORK IN PROGRESS =
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= Introduction =
 
 
 
This cheat sheet offers tips for the initial design and review of an application's security architecture.
 
 
 
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= Business Requirements =
 
 
 
== Business Model ==
 
 
 
* What is the application's primary business purpose?
 
* How will the application make money?
 
* What are the planned business milestones for developing or improving the application?
 
* How is the application marketed?
 
* What key benefits does application offer its users?
 
* What business continuity provisions have been defined for the application?
 
* What geographic areas does the application service?
 
 
 
== Data Essentials ==
 
 
 
* What data does the application receive, produce, and process?
 
* How can the data be classified into categories according to its sensitivity?
 
* How might an attacker benefit from capturing or modifying the data?
 
* What data backup and retention requirements have been defined for the application?
 
 
 
== End‐Users ==
 
 
 
* Who are the application's end‐users?
 
* How do the end‐users interact with the application?
 
* What security expectations do the end‐users have?
 
 
 
== Partners ==
 
 
 
* Which third parties supply data to the application?
 
* Which third parties receive data from the applications?
 
* Which third parties process the application's data?
 
* What mechanisms are used to share data with third‐parties besides the application itself? (EDI transmissions, FTP file processing, vendor-exposed API's, etc.)
 
* What security requirements do the partners impose?
 
 
 
== Administrators ==
 
 
 
* Who has administrative capabilities in the application?
 
* What administrative capabilities does the application offer?
 
 
 
== Regulations ==
 
 
 
* In what industries does the application operate?
 
* What security‐related regulations apply?
 
* What auditing and compliance regulations apply?
 
* How will changes to regulatory requirements be communicated, managed and implemented over time?
 
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= Infrastructure Requirements =
 
 
 
== Network ==
 
* What details regarding routing, switching, firewalling, and load‐balancing have been defined?
 
* What network design supports the application?
 
* What core network devices support the application?
 
* What network performance requirements exist?
 
* What private and public network links support the application?
 
 
 
== Systems ==
 
* What operating systems support the application?
 
* What hardware requirements have been defined?
 
* What details regarding required OS components and lock‐down needs have been defined?
 
 
 
== Infrastructure Monitoring ==
 
* What network and system performance monitoring requirements have been defined?
 
* What mechanisms exist to detect malicious code or compromised application components?
 
* What network and system security monitoring requirements have been defined?
 
 
 
== Virtualization and Externalization ==
 
* What aspects of the application lend themselves to virtualization?
 
* What virtualization requirements have been defined for the application?
 
* What aspects of the product may or may not be hosted via the cloud computing model?
 
* If applicable, what approach(es) to cloud computing will be taken (Managed Hosting versus "Pure" Cloud, a "full machine" approach such as AWS-EC2 versus a "hosted database" approach such as AWS-RDS and Azure, etc)?
 
* How will the advantages and constraints of each approach be weighed and decided upon?
 
 
 
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= Application Requirements =
 
 
 
== Environment ==
 
* What frameworks and programming languages have been used to create the application?
 
* What process, code, or infrastructure dependencies have been defined for the application?
 
* What databases and application servers support the application?
 
* How will database connection strings, encryption keys, and other sensitive components be stored, accessed, and protected from unauthorized detection?
 
 
 
== Data Processing ==
 
* What data entry paths does the application support?
 
* What data output paths does the application support?
 
* How does data flow across the application's internal components?
 
* What data input validation requirements have been defined?
 
* What data does the application store and how?
 
* What data is or may need to be encrypted and what key management requirements have been defined?
 
* What capabilities exist to detect the leakage of sensitive data?
 
* What encryption requirements have been defined for data in transit over WAN and LAN links?
 
== Access ==
 
* What user privilege levels does the application support?
 
* What user identification and authentication requirements have been defined?
 
* What user authorization requirements have been defined?
 
* What session management requirements have been defined?
 
* What access requirements have been defined for URI and Service calls?
 
* What user access restrictions have been defined?
 
* How are user identities maintained throughout transaction calls?
 
== Application Monitoring ==
 
* What application auditing requirements have been defined?
 
* What application performance monitoring requirements have been defined?
 
* What application security monitoring requirements have been defined?
 
* What application error handling and logging requirements have been defined?
 
* How are audit and debug logs accessed, stored, and secured?
 
 
 
== Application Design ==
 
* What application design review practices have been defined and executed?
 
* How is intermediate or in-process data stored in the application components' memory and in cache?
 
* How many logical tiers group the application's components?
 
* What staging, testing, and Quality Assurance requirements have been defined?
 
 
 
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= Security Program Requirements =
 
 
 
== Operations ==
 
* What is the process for identifying and addressing vulnerabilities in the application?
 
* What is the process for identifying and addressing vulnerabilities in network and system components?
 
* What access to system and network administrators have to the application's sensitive data?
 
* What security incident requirements have been defined?
 
* How do administrators access production infrastructure to manage it?
 
* What physical controls restrict access to the application's components and data?
 
* What is the process for granting access to the environment hosting the application?
 
 
 
== Change Management ==
 
* How are changes to the code controlled?
 
* How are changes to the infrastructure controlled?
 
* How is code deployed to production?
 
* What mechanisms exist to detect violations of change management practices?
 
 
 
== Software Development ==
 
* What data is available to developers for testing?
 
* How do developers assist with troubleshooting and debugging the application?
 
* What requirements have been defined for controlling access to the applications source code?
 
* What secure coding processes have been established?
 
 
 
== Corporate ==
 
* What corporate security program requirements have been defined?
 
* What security training do developers and administrators undergo?
 
* Which personnel oversees security processes and requirements related to the application?
 
* What employee initiation and termination procedures have been defined?
 
* What application requirements impose the need to enforce the principle of separation of duties?
 
* What controls exist to protect a compromised in the corporate environment from affecting production?
 
* What security governance requirements have been defined?
 
 
 
= Authors and Primary Editors  =
 
[http://www.zeltser.com Lenny Zeltser - First Draft 2012]
 
 
 
[mailto:[email protected] Tony Turner - 2015 Format Change and Revisions]
 
 
 
= Other Cheatsheets  =
 
{{Cheatsheet_Navigation}}  
 
 
 
[[Category:Cheatsheets]]
 

Latest revision as of 20:57, 17 August 2018

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