Capturing scenarios

Software use and misuse scenarios are valuable tools in software development and security. They help identify how the software is intended to be used, abused, or misused. Use scenarios focus on legitimate and expected interactions with the software, while misuse scenarios concentrate on potential security threats and vulnerabilities. Scenarios capture specifics about the users and the systems they are interacting with. Scenarios can capture how the current systems work, or they can be visionary of how they want the system to work. Here are examples of use scenarios:

• User registration: Kate, a new user, creates an account by providing a username, email, and password, and she receives a confirmation email after the process is complete
• Login: A registered user, Fred, enters his account by entering his credentials into the web page
• Product purchase: A customer, Sally, adds items to their shopping cart, proceeds to checkout, and completes a purchase
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