Protect POS terminals, segment guest WiFi, and maintain PCI DSS compliance with URL classification powered by over 100 million domains across 59 content categories.
POS systems are the top target for retail cybercriminals. DNS-level web filtering blocks threats before cardholder data ever leaves your network.
Meet PCI DSS 4.0 requirements for network segmentation and outbound traffic control across cardholder data environments.
Filter customer WiFi with 59 content categories to block harmful content while preserving a positive shopping experience.
Define policies once, enforce everywhere. Centralized control across every store, every register, every network segment.
Guest WiFi drives customer engagement but introduces significant security and liability risks.
Offering free WiFi in retail locations has become a competitive necessity. Customers expect connectivity while shopping, and retailers use WiFi analytics for foot traffic analysis, proximity marketing, and loyalty program engagement. However, unfiltered guest WiFi creates serious legal and reputational exposure. If a customer accesses illegal content, distributes unsafe content, or launches attacks against other users on your network, your organization can face legal liability, negative publicity, and regulatory scrutiny.
Implementing web filtering on guest WiFi networks using our 59-category classification system allows you to block access to inappropriate content categories including Adult Content, unsafe content, Gambling, Weapons, Drugs, and Violence while allowing legitimate shopping, social media, and entertainment access. This protects both your customers and your brand. Additionally, proper guest network filtering helps maintain PCI DSS segmentation requirements by ensuring that customer devices on the guest VLAN cannot access internal retail systems through compromised or malicious websites that might facilitate lateral network movement.
PCI DSS 4.0 raises the bar for network security controls in cardholder data environments.
The Payment Card Industry Data Security Standard version 4.0, which became mandatory in March 2025, introduces strengthened requirements for network segmentation, access controls, and content risk monitoring in environments that store, process, or transmit cardholder data. Requirement 1 mandates that network security controls restrict traffic between trusted and untrusted networks. Requirement 5 requires protection against unsafe content on all systems. Requirement 6 demands secure system development practices. Requirement 11 calls for regular network vulnerability testing.
Web filtering directly addresses multiple PCI DSS requirements by blocking outbound connections from cardholder data environments to known malicious domains, preventing employees from accessing restricted content sites that could compromise credentials, and creating auditable logs of all web traffic categorization decisions. Our API returns categorization data in under 50 milliseconds, enabling inline filtering that does not impact transaction processing speeds. QSAs and ISAs conducting PCI assessments consistently recognize DNS and URL-level filtering as a meaningful compensating control that strengthens the overall security posture of the cardholder data environment.
Retail chains need uniform security policies enforced across hundreds or thousands of locations.
Managing web filtering across a retail chain with dozens, hundreds, or even thousands of store locations presents unique operational challenges. Each location may have different ISPs, varying network architectures, and local IT constraints. Store managers and associates may attempt to bypass filtering to access social media, streaming services, or other non-work-related content, inadvertently creating security gaps that attackers can exploit. Without centralized policy management, maintaining consistent security posture across the entire chain is nearly impossible.
Our API-based approach to web filtering enables centralized policy definition with distributed enforcement. Your security operations center defines which of the 59 content categories should be blocked, allowed, or monitored for each network segment -- POS, back office, associate WiFi, and guest WiFi. These policies are enforced at each location through your existing DNS infrastructure or secure web gateway, with our database providing real-time classification data. Every location receives the same content classification, the same domain categorizations, and the same policy enforcement, regardless of their local network topology or ISP.
Features designed for the unique challenges of retail network environments
Block all non-essential outbound connections from POS network segments. Allow only payment processor domains, inventory systems, and approved update servers while blocking everything else.
Filter customer WiFi with family-friendly default policies that block adult content, unsafe content, and other harmful categories while preserving a positive shopping experience.
Define and deploy filtering policies centrally for all locations. Segment by network type -- POS, back office, associate, guest -- with consistent enforcement chain-wide through a single API.
Sub-50ms API response times ensure filtering never slows down POS transactions, inventory lookups, or customer-facing applications that depend on fast network performance.
How retail organizations leverage our web filtering database
Retailers with online storefronts can use domain categorization to identify and block connections from known fraud infrastructure. When orders originate from IP addresses associated with VPN/Proxy or known malicious domains, real-time categorization enables risk scoring before transactions are approved, reducing chargebacks and fraud losses.
Retail associate workstations and handheld devices need internet access for inventory management, customer lookups, and order processing, but unrestricted access leads to productivity loss. Category-based filtering allows IT teams to permit business-critical domains while restricting social media, streaming, and gaming during work hours.
Retailers connect to supplier portals, logistics platforms, and EDI systems that exchange sensitive inventory and pricing data. Filtering ensures that workstations accessing these supply chain systems cannot simultaneously connect to compromised websites that might attempt to intercept or exfiltrate trade data.
In-store digital signage, price check kiosks, and self-checkout terminals connect to the internet for content updates and transaction processing. Web filtering ensures these devices can only communicate with approved content management and payment domains, preventing them from being hijacked as network entry points.
Classify domains in real time to enforce POS allowlists, filter guest WiFi, and flag risky vendor connections across every store location.
import requests # Retail network security: classify domains for POS & guest WiFi filtering domains = ["payment-gateway.com", "pos-vendor.com", "social-media.com", "gambling-site.xyz"] for domain in domains: response = requests.post( "https://webfilteringdatabase.com/api/moderate.php", json={"api_key": "YOUR_API_KEY", "query": domain} ) data = response.json() risk = data["risk_level"] category = data["primary_category"] print(f" {domain}: {category} (risk: {risk})") # Response: primary_category, categories, risk_level
// Retail network security: classify domains for POS & guest WiFi filtering const domains = ["payment-gateway.com", "pos-vendor.com", "social-media.com", "gambling-site.xyz"]; for (const domain of domains) { const response = await fetch("https://webfilteringdatabase.com/api/moderate.php", { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({ "api_key": "YOUR_API_KEY", "query": domain }) }); const data = await response.json(); console.log(` ${domain}: ${data.primary_category} (risk: ${data.risk_level})`); } // Response: primary_category, categories, risk_level
# Retail network security: classify domains for POS & guest WiFi filtering # Check payment gateway domain curl -X POST "https://webfilteringdatabase.com/api/moderate.php" \ -H "Content-Type: application/json" \ -d '{"api_key":"YOUR_API_KEY","query":"payment-gateway.com"}' # Check gambling site curl -X POST "https://webfilteringdatabase.com/api/moderate.php" \ -H "Content-Type: application/json" \ -d '{"api_key":"YOUR_API_KEY","query":"gambling-site.xyz"}' # Response: primary_category, categories, risk_level
// Retail network security: classify domains for POS & guest WiFi filtering $domains = ["payment-gateway.com", "pos-vendor.com", "social-media.com", "gambling-site.xyz"]; foreach ($domains as $domain) { $ch = curl_init("https://webfilteringdatabase.com/api/moderate.php"); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([ "api_key" => "YOUR_API_KEY", "query" => $domain ])); curl_setopt($ch, CURLOPT_HTTPHEADER, ["Content-Type: application/json"]); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); $data = json_decode(curl_exec($ch), true); curl_close($ch); echo " {$domain}: {$data['primary_category']} (risk: {$data['risk_level']})\n"; } // Response: primary_category, categories, risk_level
Deploy retail-grade web filtering powered by 100 million classified domains