Notes - MCS
Robust Software
Notes - MCS
Robust Software
  • Robust Software
  • Secure Software Design Principles
    • Motivation
    • Secure and Resilient/Robust Software
    • Best Practices for Resilient Applications
    • Designing Applications for Security and Resilience
    • Architecture for the Web/Cloud
  • Software Security Lifecycle
    • Motivation
    • Secure Development Lifecycle
    • Software Security Touchpoints
    • Software Assurance Forum for Excellence in Code (SAFECode)
    • Secure SW Lifecycle Processes Summary
    • Adaptations of the Secure Software Lifecycle
    • Assessing the Secure Software Lifecycle
    • Recommendations
  • Software Quality Attributes
    • Motivation
    • Software Quality Assurance
    • Software Quality Standards
    • Software Quality Attributes
    • Extra Software Quality Assurance Properties
  • Security Requirements
    • Motivation
    • Security Requirements
    • Threats
    • Defenses
    • Confidentiality
    • Integrity
    • Availability
    • What about other goals/properties?
    • Security Requirements Engineering
    • Types of Security Requirements
    • Security Policy
    • Precision
    • Completeness and Consistency
    • Examples of Non-Functional Requirements
    • Goals and Requirements
    • Measures
    • Requirements Interaction
    • Natural Language Requirements
    • Best Practices
  • Common Software Attacks
    • Objectives
    • 10 Major Cyber-Attacks of 21st Century
    • Software Security Basics
    • Defenses Methods
    • SANS SWAT Checklist
  • Safe Programming
    • Secure Coding Practices
    • Top 10 Secure Coding Practices (CERT/SEI)
    • 7 Pernitious Kingdoms
  • Robustness, PenTest, Fuzzy and Static Code Analysis
    • Security/Robustness Testing
    • Robustness Tests Checklist Example
    • Penetration Testing
    • Penetration Testing Roadmap
    • Tools
    • Fuzz Testing
    • Static Code Analysis
    • Side Channels
  • Safety (and Security)
    • Safety
    • A safety Lifecycle Example
    • Risk Management Process
    • System Definition
    • Hazard Identification and Classification
    • Desk-based Hazard Identification
    • Workshop-based Hazard Identification
    • HAZOP
    • Hazard Identification and Classification
      • Broadly acceptable risks
    • Risk Evaluation and Risk Acceptance
    • Use of codes of practice
    • Use of reference system
    • Explicit risk estimation
    • Qualitative risk estimation
    • Quantitative risk estimation
    • Safety measures
    • Safety requirements
    • Hazard Management
    • Hazard life cycle
    • Independent Assessment
    • Safety Plan
    • Safety Case
    • FMEA Example
    • DevSecOps
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  • Examples of Functional Requirements
  • Precision
  1. Security Requirements

Precision

Examples of Functional Requirements

A. All users will access the system using a user id and a password.

B. The system shall support the following document formats: PDF, RTF, Microsoft Word 2010 and ASCII text.

C. Every transaction shall be allocated a unique identifier.

D. The system shall have a mechanism to help recover a user’s password.

Precision

Ambiguous requirements are interpreted in different ways by developers and users.

For example, ‘recover password’:

  • User intention – a mechanism that allows the user to view the password after going through an authentication procedure.

  • Developer interpretation – allowing the user to reset their password so that it can be set again (e.g. using an email link).

Thus, requirements shall be defined as precisely and clearly as possible.

Last updated 1 year ago