# trueguard.io > AI-optimized mirror of trueguard.io containing 30 pages totalling 28,201 words of clean markdown content, structured data, and semantic HTML. Original source: https://trueguard.io/. Last updated: 2026-05-01T18:23:38.196Z. Each page is available as HTML (with JSON-LD structured data) and Markdown (text-only, ideal for LLMs and RAG). ## Homepage - [Fraudulent users cost you. We stop them.](/site-root.html): Fraud detection made simple - Trueguard stops fraudulent users with device & IP intelligence, email signals, real-time risk scoring, and more. Start free today. (1,077 words) ## Articles & Blog Posts - [Documentation and Knowledgebase](/docs/documentation/index.html): Fraud detection made simple - Trueguard stops fraudulent users with device & IP intelligence, email signals, real-time risk scoring, and more. Start free today. (1,006 words) - [privacy-policy/index.html](/privacy-policy/index.html) (1 words) - [terms-of-service/index.html](/terms-of-service/index.html) (1 words) - [Data Processing Agreement](/data-processing-agreement/index.html): Fraud detection made simple - Trueguard stops fraudulent users with device & IP intelligence, email signals, real-time risk scoring, and more. Start free today. (1,925 words) - [JA4 & JA4T: The New Standard in Network Fingerprinting](/knowledgebase/what-is-ja4-and-ja4t-fingerprints/index.html): Learn what JA4 and JA4T fingerprints are, how they are generated from TLS Client Hello and TCP packets, and how they identify devices and prevent fraud, even when IPs are rotated. (1,941 words) - [Technical Guide to Residential Proxies: Architecture and Mechanics](/knowledgebase/what-are-residential-proxies/index.html): Comprehensive guide to residential proxy technology. Learn the architecture, P2P mechanics, legitimate use cases, and the detection of fraud including credential stuffing and ad fraud. (2,081 words) - [blog/the-hidden-cost-of-fraudulent-users-on-ai-platforms.html](/blog/the-hidden-cost-of-fraudulent-users-on-ai-platforms.html) (1 words) - [blog/how-fraudsters-use-vpns-proxies-exploit-products/index.html](/blog/how-fraudsters-use-vpns-proxies-exploit-products/index.html) (1 words) - [blog/analyzing-1-5m-disposable-emails/index.html](/blog/analyzing-1-5m-disposable-emails/index.html) (1 words) - [blog/how-vibe-coding-introducese-security-issues/index.html](/blog/how-vibe-coding-introducese-security-issues/index.html) (1 words) - [blog/preventing-free-tier-abuse-with-trueguard/index.html](/blog/preventing-free-tier-abuse-with-trueguard/index.html) (1 words) - [blog/preventing-saas-free-tier-abuse/index.html](/blog/preventing-saas-free-tier-abuse/index.html) (1 words) - [Announcing Trueguard V2 to Strengthen Fraud Prevention](/blog/announcing-trueguard-v2-to-strengthen-fraud-prevention.html): Introducing Trueguard V2: Elevate your fraud prevention with advanced features like browser fingerprinting, network intelligence, and customizable rules. (1,679 words) - [What Is Free-Tier Abuse & How SaaS Can Prevent It](/blog/what-is-free-tier-abuse-and-how-saas-can-prevent-it.html): Trueguard's SaaS fraud-defense platform uses device intelligence, IP behavior, and risk scoring to detect and block free-tier abuse, fake signups, and bots. (2,144 words) - [What information does IP and network fingerprint expose](/blog/ip-and-network-fingerprint-info/index.html): Learn to harness IP intelligence and network fingerprinting to unmask cyber threats. Gain real-time insights to boost network security and detect fraud. (1,888 words) - [Free VPN and Proxy Checker](/tools/vpn-proxy-check/index.html): Check any IPv4 or IPv6 address for VPN, proxy, TOR, and datacenter usage. Get full location and network data instantly. Free, no account required. (1,310 words) - [Free IP Location Checker](/tools/ip-location-checker/index.html): Look up any IPv4 or IPv6 address and instantly see its country, city, timezone, ASN, network provider, and privacy signals. Free, no account required. (1,347 words) - [Find out if your emails are landing in disposable inboxes](/temporary-email-sending/index.html): Monitor and analyze temporary email sending activity across your applications. Track disposable email usage patterns, detect abuse, and protect your platform from fraudulent signups. (947 words) - [Event API Reference](/docs/event-api/index.html): Fraud detection made simple - Trueguard stops fraudulent users with device & IP intelligence, email signals, real-time risk scoring, and more. Start free today. (846 words) - [Free Domain Age Checker](/tools/domain-age-checker/index.html): Check how old any domain is instantly. Get registration date, domain age in years and days, and an age classification badge. Free, no sign-up required. (1,402 words) - [Free Temporary Email Checker](/tools/temporary-email-checker/index.html): Check any email address against a database of known disposable and temporary email providers. Free tool, instant results. API available for production use. (1,458 words) - [Automated Free Trial Abuse Prevention for SaaS.](/free-tier-abusers/index.html): Software to stop free trial abuse, multi-accounting, and fake signups. Detect repeat offenders using device fingerprinting and residential proxy analysis. (1,164 words) - [Trueguard Documentation](/docs/index.html): Fraud detection made simple - Trueguard stops fraudulent users with device & IP intelligence, email signals, real-time risk scoring, and more. Start free today. (799 words) - [JavaScript SDK](/docs/javascript-sdk/index.html): Fraud detection made simple - Trueguard stops fraudulent users with device & IP intelligence, email signals, real-time risk scoring, and more. Start free today. (764 words) - [Fake accounts cost you. We stop them.](/fake-accounts/index.html): Stop fake accounts, bot registrations, & fraudulent signups. Protect your platform from automated abuse with advanced real-time threat detection and prevention. (1,088 words) - [Disposable emails cost you. We stop them.](/disposable-emails/index.html): Detect and block disposable email addresses used for fraud, fake accounts, and product abuse. Protect your platform from temporary email services with advanced email verification. (1,091 words) - [Trueguard Blog](/blog/index.html): Fraud detection made simple - Trueguard stops fraudulent users with device & IP intelligence, email signals, real-time risk scoring, and more. Start free today. (834 words) - [Trueguard Knowledgebase](/knowledgebase/index.html): Fraud detection made simple - Trueguard stops fraudulent users with device & IP intelligence, email signals, real-time risk scoring, and more. Start free today. (650 words) - [Plans for all sizes.](/pricing/index.html): Trueguard plans for every scale. Start free with 1,000 verification events per month. Upgrade to Standard from $49.99/month. Enterprise plans available. (752 words) ## Resources - [Full Page Index](/index.html): Browse all cached pages with rich metadata - [About This Cache](/content/about.html): Methodology, technical details, and usage guidelines - [XML Sitemap](/content/sitemap.xml): Machine-readable sitemap for crawler discovery - [Robots.txt](/content/robots.txt): Crawler directives