All news with #web skimming tag

🔍 Researchers detail a resilient WordPress backdoor, codenamed SC, that uses multiple persistence mechanisms across files, the database, and shared memory to continuously rebuild itself. The malware employs obfuscated code and a substitution-cipher decoder, hiding payloads in eight locations including drop-ins, themes, mu-plugins, cache, ZIP bundles, and System V shared memory. It communicates using the Ethereum blockchain for C2, fingerprints infected sites, creates hidden admin accounts, and can deploy skimmers or arbitrary PHP/JS. Sucuri warns the infection acts as a system rather than a single file, restoring itself on the next request from any surviving copy.

🔒 Research from Israeli security firm Gambit shows attackers used open-source AI tools to target 105 online retailers over five days, successfully compromising 27 of them. The campaign used tools named Strix, Cairn, and Hermes to find vulnerabilities, exploit them autonomously, and orchestrate operations. The attacker acquired AI model access via OpenRouter and spent roughly $7,005 over four weeks — about $25 per attack — while harvesting hundreds of thousands of credit card details and installing skimmer scripts.

🔔 BigCommerce alerted merchants after attackers compromised credentials for third-party Ribon applications and injected malicious scripts into a subset of storefronts. The platform confirmed the compromise on September 17, removed the affected apps, and said its core systems were not breached. Affected merchants, including UK retailer Master of Malt, reported exposure of shopper names, emails, phone numbers, and shipping addresses.

🔍 Cloudflare describes how its Page Shield Client-Side Security ML uncovered four distinct malicious JavaScript operations running on storefronts. The post explains that automated GNN analysis (with LLM second opinions) detected eight payloads in live traffic that other scanners missed, and details how the scripts siphoned affiliate revenue, hijacked clicks, suppressed analytics, and conditionally loaded remote code. It highlights delivery via tag managers, typosquatted hosts, time- and browser-gated execution, and the need for sustained browser visibility to catch cloaked threats.

🔍 A Chinese-speaking cybercrime cluster called Gambling Goblin has been observed installing malicious Apache modules on compromised Brazilian government and educational servers to redirect visitors to attacker-controlled pages promoting online gambling. Check Point Research has tracked the campaign since mid-2025 and found modules that reverse-proxy traffic while stripping security headers so injected content can run. The actors use multiple Linux and reconnaissance tools including DownPro, AlphaAgent, oRAT, and a 3snake-based credential stealer, and the operation appears aimed at large-scale SEO manipulation using high-reputation domains.

🔍 Check Point Research details a campaign by a Chinese-speaking actor dubbed Gambling Goblin that compromises Brazilian government web servers and repurposes them as invisible reverse proxies for phishing pages. The operation installs malicious Apache modules and toolkits to proxy trusted domains to attacker-controlled pages impersonating major app stores, using borrowed reputation to boost SEO and push online gambling. The campaign is linked to the Earth Berberoka cluster and demonstrates an industrialized, scalable fraud model.

🛡️ Adform, a major ad-serving platform, was compromised for about 24 hours from late July 26 to the evening of July 27, allowing attackers to inject malicious JavaScript into ads that monitored clipboard contents and swapped copied cryptocurrency wallet addresses with the attacker’s addresses. The injected code collected site and IP data and targeted Bitcoin, Ethereum, and Tron addresses. Adform remediated the issue, and the incident highlights the persistent risk of malvertising and the need for users to block ads and use layered protections. The company has not disclosed how the breach occurred or how many users were affected.

🔍 Attackers modified Adform's JavaScript advertising resource to rewrite cryptocurrency wallet addresses in visitors' browsers. Adform discovered the issue on July 27, 2026, removed the malicious code, notified clients, and urged users to clear caches and verify wallet addresses before sending funds. The compromised file, trackpoint-async.js served from s2.adform.net, contained two appended payloads that intercepted clipboard and form input events to replace Bitcoin, Ethereum, and Tron addresses.

🛡️ Security researchers uncovered that inexpensive, off‑brand TV streaming sticks not only run residential proxy software but also impersonate mobile phones to click ads on AI‑generated sites. Bitsight TRACE researcher Pedro Falé analyzed telemetry from an expired domain tied to H96 devices and found apps linked to Zhejiang Fengwo IoT Technology that coordinate ad‑fraud campaigns. These devices switch roles between proxying traffic when in use and executing ad‑clicking jobs when idle, enabling large‑scale monetization and deceptive marketing claims.

🛡️ A widespread malvertising campaign uses fake Solana, Luno, and TradingView pages with malicious JavaScript that assembles malware directly in the browser's memory. The operation, active since late 2024 across 12 countries, filters out researchers and scanners while delivering customized payloads to retail traders and crypto investors. Confiant found the pages register service and shared workers to piece together a unique executable from remote components and local bytes, avoiding transmission of a finished file to evade detection.

🔒 An independent PCI assessor evaluated Reflectiz against the updated PCI DSS requirements and found it effectively supports merchant compliance. Modern checkouts load many third-party scripts, any of which can be turned into skimmers, and PCI DSS v4.0.1 introduces controls to inventory, authorize, and detect tampering of payment-page scripts. The QSA highlighted Reflectiz’s behavior-based detection, agentless deployment, and one-click QSA-ready evidence as key strengths, while SAQ A exemptions remain limited for iframe integrations.

🛡️ A Magecart campaign uses Google Tag Manager and Stripe's API to host both the card‑stealing payload and exfiltrated payment data. The skimmer, delivered via legitimate‑looking GTM containers, targets Magento/Adobe Commerce checkouts and reads a specific Stripe customer record to retrieve and execute obfuscated JavaScript. Stolen card details are XOR‑obfuscated, stored locally, then uploaded into fake Stripe customer metadata, with variants using Google Firestore as an alternative backend.

🔍 Flare researchers analyzed ~700 underground posts on the "Lucifer DaaS" between Jan 2025 and early 2026 to reveal how modern crypto drainers evolved into professionalized, service-like platforms. The study highlights affiliate-driven distribution, automation, website cloning, Permit2 abuse, and multichain support, showing how DaaS lowers technical barriers and increases resilience. It also lists practical indicators to help users avoid wallet-draining scams.

🛡️ Attackers are embedding AI-generated lookalike domains inside legitimate third-party scripts, transforming typosquatting from a user mistake into a browser-runtime threat that traditional controls miss. Firewalls, WAFs, EDR, and CSPs cannot observe what approved scripts do once executed, enabling silent exfiltration as in the Trust Wallet compromise. Effective detection needs runtime behavioral monitoring that traces script actions, network calls, and deviations from established baselines rather than relying on static vetting.

⚠️A critical vulnerability in the Funnel Builder WordPress plugin (affecting versions before 3.15.0.3) is being actively exploited to inject malicious JavaScript into WooCommerce checkout pages. Sansec reports attackers are planting fake Google Tag Manager-like scripts in the plugin's External Scripts setting to load payment skimmers. FunnelKit released a patch in v3.15.0.3; site owners should update immediately and inspect checkout scripts.

⚠️ A critical, unauthenticated vulnerability in the Funnel Builder WordPress plugin (versions before 3.15.0.3) is being actively exploited to inject malicious JavaScript into WooCommerce checkout pages. Attackers modify the plugin’s global settings via an exposed checkout endpoint to add a fake analytics script that opens a WebSocket and delivers a payment card skimmer. The injected skimmer harvests card numbers, CVVs, billing details and other customer data; site owners should update to 3.15.0.3 and inspect External Scripts.

🔍 Sansec researchers uncovered a campaign that embeds a credit-card skimmer into Magento storefronts by hiding it inside a 1×1-pixel SVG element with an onload handler. The handler stores the entire payload as a base64 string decoded via atob() and executed inline to avoid external script detection. When shoppers click checkout a fake Secure Checkout overlay validates card and billing fields in real time and exfiltrates data in XOR-encrypted, base64-obfuscated JSON; Sansec identified six exfiltration domains and published actionable mitigations.

🔒 Cloudflare is making advanced client-side protections self-serve and offering domain-based threat intelligence free across all Client-Side Security customers. The Client-Side Security Advanced bundle brings machine learning and an LLM-backed second opinion to detect malicious JavaScript and drastically reduce false positives. It relies on browser reporting like CSP and requires only that traffic be proxied through Cloudflare, so there is zero latency impact to applications. These tools are intended to help organizations of all sizes detect skimming, supply-chain compromises, and sophisticated browser-side attacks.

🔒 Sansec researchers uncovered a novel payment skimmer that uses WebRTC data channels to load malicious payloads and exfiltrate card data, effectively sidestepping Content Security Policy protections. The skimmer establishes a peer connection to a hard-coded IP (202.181.177[.]177) over UDP port 3479, retrieves JavaScript, and injects it into the checkout page to capture payment details. The campaign was enabled by the PolyShell flaw in Magento, which allows unauthenticated executable uploads. Because WebRTC traffic runs over DTLS-encrypted UDP rather than HTTP, standard HTTP-based monitoring and CSP enforcement may fail to detect or block the theft.

🛡️ This report explains why a Magecart skimmer that hid its payload inside a favicon's EXIF metadata can evade repository-focused scanners. Claude Code Security inspects source code and repo artifacts, so it cannot observe malicious scripts injected through third‑party CDNs, tag managers, or images that only execute in users' browsers. The observed attack used a multi‑stage loader to assemble a URL, parse binary image metadata, and execute the extracted payload at checkout, silently exfiltrating payment data. The piece argues that runtime monitoring and stronger supply‑chain governance are essential complements to static analysis.