Enterprise-grade PCI security, built for SME merchants
CyberShield Studio is a founder-led cybersecurity practice focused on ecommerce security and PCI compliance for growing merchants, $1M to $50M in revenue, across SAQ A, SAQ A-EP, and SAQ D.
Our sweet spot is the growing brand that needs compliance handled professionally but doesn't have the budget for a full-time security hire or a $15,000+ QSA engagement. Whether you redirect to a hosted checkout (SAQ A) or run card data through your own environment (SAQ A-EP / SAQ D), we get you audit-ready and keep you there.
PCI DSS v4.0.1 introduced new payment-page monitoring requirements in March 2025 that most stores still haven't addressed. Script injection, particularly Magecart-style skimming, remains the primary attack vector against SMB ecommerce, and those new requirements exist precisely because the industry treated it as a non-issue for too long.
AI is rewriting both sides of the fight
Attackers now use AI to find weaknesses, generate obfuscated skimmers, and automate fraud at a scale that wasn't possible a few years ago. Defense has to keep pace. We build AI directly into how we work, triaging scan results, monitoring payment-page scripts for anomalies, and translating dense PCI requirements into plain-English actions, so a lean team gets coverage that used to require a security department.
That's not a bolt-on. Our founder has spent the last decade building production AI systems. We understand the technology attackers are adopting because we build with it ourselves.
Who you'll be working with
Dennis Wu
Founder & Principal Consultant, CISSP, PCIP
Dennis is a CISSP-certified technology executive with 30+ years building and securing large-scale payment platforms. As CTO at buuteeq and Head of Engineering at Booking.com's BookingSuite, he personally led PCI Level 1 compliance programs, re-architecting AWS network segmentation to shrink cardholder-data scope and running enterprise vulnerability management with Qualys. As acting CSO at Linc, he owned security governance for enterprise retail brands including PacSun, Carter's, and Levi's.
He's also a working AI builder, today Chief AI Architect at E2 Nova, and previously co-founder/CTO of Linc, where he shipped generative-AI support automation for commerce. He holds an MS in Computer Science from Stanford and is a certified PCIP (PCI Professional). That combination, enterprise PCI experience plus hands-on AI, is rare, and it's the core of how we work.
Brandon Wu
Cybersecurity Analyst, Security+
Brandon holds a BS in Cybersecurity and a CompTIA Security+ certification, and leads day-to-day scanning, gap analysis, and remediation. He turns scan output and SAQ requirements into a clear, prioritised worklist, and stays on it until every finding is closed.
Credentials & Education
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