PCI DSS 4.0.1 compliance.
Plain English.
Insights on client-side security, payment page risk, browser-layer threats, and what the new mandatory requirements actually mean for your business.
PCI DSS 4.0.1 Is Here. Most Online Stores Don't Know They're Already Violating It.
What changed, when it became mandatory, and the real cost of non-compliance — explained for anyone who runs an online store.
Read article → Deep DiveWhat Is Req 6.4.3 and Why Is It Shutting Down Merchants?
A deep dive into the script inventory and authorization requirement — what it demands, and how to actually build one.
Read article → Threat IntelligenceHow Magecart Works: A Plain-English Breakdown of Web Skimming
The attack that PCI DSS 4.0.1 was built to stop — how it works, who's been hit, and what your checkout page looks like to an attacker.
Read article → Deep DiveReq 11.6.1: Building a Tamper Detection Mechanism Your QSA Will Accept
Real-time alerting requirements explained — what counts as a compliant mechanism and what doesn't.
Read article → High RiskGoogle Tag Manager and PCI DSS 4.0.1: What Every Store Owner Needs to Know
Tag managers are among the highest-risk vectors on checkout pages. Here's why PCI DSS 4.0.1 puts them under a microscope.
Read article → Common Misconceptions"My Platform Is PCI Compliant" — Why That's Not the Whole Story
Shopify, WooCommerce, Magento — platform compliance and browser-layer compliance are two very different things.
Read article → Tools & GuidesFree PCI Compliance Scan: What It Actually Checks (And What It Misses)
Most free PCI compliance scans check your infrastructure layer — SSL, ports, headers. None of them check the browser layer of your checkout page. Here's the gap that actually matters.
Read article → Deep DiveWhat You Get From a CSI Deep Scan — Every Section, Every Finding, Explained
The $79 CSI Deep Scan is a full PCI DSS 4.0.1 client-side security assessment delivered as a PDF. Here's a complete walkthrough of every section in the report before you order.
Read article → CompliancePCI DSS 4.0.1: What Changed, What Stayed the Same, and What It Means for Your Checkout Page
PCI DSS 4.0 was retired December 31, 2024. 4.0.1 is now the only active standard. Here's the full breakdown — and why Requirements 6.4.3 and 11.6.1 still apply to your checkout exactly as before.
Read article → Case StudyYour Homepage Passed. Your Checkout Didn't.
A national hospitality brand's homepage returned LOW risk on a surface scan. A deep scan of their payment pages returned CRITICAL. Here's the gap PCI DSS 4.0.1 was written to close.
Read article → ResearchWe Scanned 100,000 E-Commerce Domains for PCI DSS 4.0.1 Client-Side Risk — Here's What We Found
37% of scanned domains showed active browser-layer exposure on payment pages. Full methodology, findings breakdown, and what it means for merchants post-March 2025.
Read article →See your own browser-layer exposure — free.
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