Developer Builds Browser-Only Tool to Generate Luhn-Valid Test Credit Card Data

·3 views

A developer has created a browser-based tool that generates structurally valid test credit card numbers for payment form testing, requiring no account, server, or database. The generator supports seven card networks — including Visa, Mastercard, and Amex — by applying the Luhn algorithm to produce check-digit-valid numbers. All data is generated locally in the browser, meaning no card numbers, names, or security codes are ever transmitted to a server, reducing privacy and logging risks. The tool supports batch generation of up to 20 records with options to copy, export as JSON, or download as CSV. Importantly, the author clarifies that Luhn-valid numbers are not real cards and cannot test live payments, issuer approvals, or fraud systems — for those, official sandbox environments remain necessary.

Read the full story at DEV Community

This is an AI-generated summary. ShortSingh links to the original source for the complete article.

Discussion (0)

Developer Builds Automated Pentest Suite to Stress-Test His Own macOS Security App

Tetsuharu, developer of the macOS network-security app RoamSwitch, created an automated penetration testing suite to check whether new code updates introduced security regressions. Rather than risk destabilizing his primary machine, he used Tart, a lightweight macOS virtualization tool, to run tests inside a disposable macOS Sonoma virtual machine. The suite probed five defense boundaries, including XPC authorization, packet filter rules, port exposure detection, and ARP gateway consistency. Key results confirmed that the privileged root helper correctly rejected unauthorized XPC callers, the Air-Gap firewall rules enforced a fail-closed policy, and globally exposed ports were detected and shielded as expected. The approach offers a repeatable, low-risk method for security regression testing across app releases.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Developer Seeks Community Testers for SharePoint Effective Access Audit SPFx Web Part

A developer has submitted a read-only React-based SPFx web part called Effective Access Audit to the PnP SharePoint Framework repository for community review. The web part displays direct role assignments for a SharePoint site and optional list, showing principal details, role names, and permission scope without modifying any permissions. Local testing is complete, with five Jest tests, TypeScript, ESLint, and webpack builds all passing successfully. The developer lacks access to a live SharePoint Online tenant and is asking community members to validate real-world behavior, including how role assignments, scope labels, and error states appear. Feedback and tenant screenshots are requested via the open pull request on GitHub.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

AWS IAM Explained: How Users, Groups, and Roles Control Cloud Access

AWS Identity and Access Management (IAM) is a service that controls who can access resources within an AWS account, eliminating the need to share root credentials. IAM Users are individual identities created for people or applications, each with their own credentials, while IAM Groups allow administrators to assign permissions collectively rather than one user at a time. IAM Roles function like users but carry no permanent credentials; instead, they issue temporary, auto-expiring access tokens to services such as EC2 or Lambda that need to interact with other AWS resources. This approach is considered more secure than hardcoding access keys, since temporary credentials reduce the risk of long-term exposure if a system is compromised. Together, these three IAM components provide a layered, least-privilege framework for managing access across an AWS environment.

0 comments Read more at DEV Community

ProgrammingHacker News ·

EU's ProtectEU Strategy Renews Drive for Law Enforcement Encryption Access

The European Commission has revived its push to require encryption backdoors through a new initiative called the ProtectEU strategy. The proposal seeks to grant law enforcement agencies access to encrypted communications, reigniting a long-standing debate over privacy versus security. Critics have consistently argued that backdoors undermine encryption for all users, not just criminals. The move follows earlier failed attempts by EU institutions to pass similar surveillance-enabling legislation. The strategy signals that Brussels has not abandoned efforts to legislate access to encrypted data despite strong opposition from privacy advocates and technologists.

0 comments Read more at Hacker News