Shift Left is Only Half the Battle The “shift left” movement has been revolutionary — empowering developers to build secure software earlier through CI/CD pipelines, static analysis, and container scanning. But many teams forget a critical truth:Threats don’t stop at deployment — and neither should security. Once your site is live, third-party scripts change, configurations…
Introduction When you think of web security, you probably think of securing code — JavaScript files, backend APIs, authentication logic. But here’s the truth:Web integrity isn’t just about code — it’s about the entire user interface. Modern client-side attacks don’t always involve uploading malicious files. Instead, they manipulate the Document Object Model (DOM) — the…
Introduction Your web application may use encryption, firewalls, and endpoint protection — but all of that can be bypassed if your HTTP security headers are misconfigured or missing. Security headers are low-effort, high-impact protections that instruct browsers how to behave when rendering your site. When set correctly, they mitigate risks like cross-site scripting (XSS), clickjacking,…
Introduction Every modern website uses SSL/TLS certificates to encrypt traffic and prove authenticity. But certificates don’t last forever — they expire, often in 90 days or a year. While certificate expiry may seem like a small oversight, the consequences are massive. When a certificate expires, it breaks user trust, disrupts payments, and can even result…
Introduction In today’s security climate, where supply chain attacks have become common and third-party code is everywhere, trust is no longer a default — it must be verified. That’s why modern security strategies, including PCI DSS v4.0 and Zero Trust Architecture, increasingly rely on mechanisms like Subresource Integrity (SRI). SRI is a simple but powerful…
By the Breachfin TeamPublished: July 21, 2025 Introduction The latest evolution of the Payment Card Industry Data Security Standard (PCI DSS v4.0) introduced new and updated requirements to address modern attack vectors — particularly those targeting client-side vulnerabilities. Two of the most important but often misunderstood controls are: Both are focused on protecting customer data…
By the Breachfin TeamPublished: July 21, 2025 Introduction Modern web applications rely heavily on JavaScript for dynamic user interfaces, payment forms, analytics, and third-party services. But the same flexibility that makes JavaScript so powerful also makes it vulnerable to abuse. One technique used by attackers to hide malicious activity is obfuscation—rewriting code in a way…
By the Breachfin TeamPublished: July 21, 2025 Introduction In recent years, Magecart attacks have become synonymous with web-based credit card theft. These attacks are subtle, powerful, and devastating—quietly siphoning payment data from unsuspecting users during checkout. What started as simple skimming scripts injected into poorly secured websites has now evolved into a sophisticated ecosystem of…
In the ongoing effort to protect sensitive data and prevent malicious code execution on the web, Content Security Policy (CSP) has become one of the most widely adopted browser-based security mechanisms. If implemented correctly, CSP can significantly reduce the risk of cross-site scripting (XSS), clickjacking, and code injection. However, CSP isn’t a silver bullet—and its…
Published on: July 21, 2025Author: Breachfin Team As cyber threats evolve, compliance frameworks must adapt to stay ahead of the curve. That’s exactly what PCI DSS v4.0 has done — and one of its most critical updates is Requirement 11.6.1, which mandates monitoring the integrity of JavaScript on payment pages. Yet, most security teams still…
