Overview
Real-time formjacking detection that detects web skimming attacks targeting your payment information.
SkimShield detects formjacking (web skimming) attacks targeting your payment card data in real time — the kind used in the Magecart breaches that hit British Airways, Ticketmaster, and thousands of online stores. HOW IT WORKS When you enter payment details on a checkout page, SkimShield monitors outgoing network requests. If a suspicious script tries to send your card number, CVV, or expiry date to an unknown external server, SkimShield alerts you immediately — and lets you block that domain with one click. WHAT IT MONITORS • fetch() and XMLHttpRequest calls • sendBeacon requests (commonly abused by skimmers) • Image.src requests (skimmers encode stolen data in image URLs) • WebSocket connections • localStorage staging patterns • Dynamically injected scripts and hidden iframes SMART HEURISTIC ENGINE SkimShield uses a multi-signal heuristic engine — not simple keyword matching. It correlates timing, payload content, destination domain, and DOM manipulation patterns to minimize false alarms. 220 recognized domains — including 110+ trusted payment gateways (Stripe, PayPal, Toss Payments, and others), analytics services, and monitoring tools — are pre-classified so legitimate traffic is never flagged. ADJUSTABLE ALERT LEVEL • Level 1 (Minimal): Only confirmed dangerous requests • Level 2 (Default): Dangerous + strong attack signals • Level 3 (Maximum): All suspicious activity 100% LOCAL — ZERO DATA COLLECTION All analysis runs entirely in your browser. SkimShield never sends your browsing data, form inputs, or any personal information to any server. There is no account, no sign-up, and no telemetry. OPEN & TRANSPARENT SkimShield is built on open web standards (Chrome Manifest V3). No obfuscated code. No hidden behavior.
Details
- Version1.0.0
- UpdatedMay 6, 2026
- Offered byskimshild
- Size95.51KiB
- LanguagesEnglish
- Developer
Email
songheon0421@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
SkimShield has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
SkimShield handles the following:
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
