Search: “Malwarebytes Browser Guard”

6 stories in the last 7d

Scam sites impersonating Bitrefill's crypto checkout appear in search results, tricking victims into sending up to $1,990 in crypto directly to scammers.

Malwarebytes documents a cluster of lookalike domains copying Bitrefill's gift card checkout, surfaced via search engine results rather than email. Victims choose an amount up to $1,990 and pay in Bitcoin, Ethereum, USDC, USDT, Solana, or Litecoin to scammer-controlled addresses, with no recourse since crypto payments are irreversible. Domains use typosquatting and Punycode/IDN homoglyph tricks, and the fake sites run commercial analytics software to measure and optimize victim conversion. Bitrefill's security team is working with takedown specialists to remove the sites.

Malwarebytes LabsSep 15, 08:40 UTC · 1d agoPhishing & fraud

More than 100,000 fake stores are out to steal your card details

Researchers uncovered DoppelCart, a network of roughly 119,000 cloned fake shops that harvest card details and one-time bank codes during checkout.

Researchers at German firm Nebty identified 118,787 .shop domains tied to cloned online stores, representing 2.72% of the TLD population examined and described as the largest publicly documented fake-shop network by domain count. The shops mimic more than 44,000 brands, advertise discounts up to 65%, and 96% of confirmed shops reportedly share identical build files using just 27 ecommerce backends. Fraudulent checkout pages send card numbers, CVVs, billing data and bank one-time confirmation codes to attacker-controlled servers in real time over WebSockets, allowing criminals to complete payments while victims are still checking out.

Malwarebytes LabsSep 9, 15:02 UTC · 6d agoPhishing & fraud

AI helps scammers build convincing antivirus renewal pages

Malwarebytes found scammers using AI to build polished fake antivirus renewal pages impersonating Avast, harvesting names, emails and phone numbers for follow-up fraud calls.

Malwarebytes analyzed a fake Avast renewal site targeting Belgian users in French, claiming a €129.99 Avast Premium Security renewal and collecting name, email address and Belgian mobile number through a cancellation form. Leftover code comments written in polite French and other stylistic clues suggest the page was generated with AI assistance, and the form was never connected to send data anywhere. The scam typically progresses to phone calls pressuring victims to install remote access software, and AI substantially lowers the barrier for producing polished, localized scam pages at scale.

Malwarebytes Labs08:41 UTC · 4h agoPhishing & fraud

BlueMoon exploit kit turns Chrome and Windows flaws into attacks

Proofpoint documents BlueMoon exploit kit used by four espionage groups to chain Chrome V8 and Windows flaws via phishing, all now in CISA's KEV.

Proofpoint identified a shared Chrome and Windows exploit kit, BlueMoon, used by four espionage groups against Chrome on Windows within days of one another. Attacks began with phishing emails leading to web pages that exploited two Chrome V8 vulnerabilities, followed by a Windows flaw to escape browser protections and gain higher privileges. The Chrome flaws were patched in Stable on September 3 and 8, 2026, the Windows flaw was fixed in September Patch Tuesday, and all three were actively exploited and added to CISA's KEV catalog. Researchers found clues, but no conclusive evidence, that the kit was developed with AI assistance.

Malwarebytes Labsupdated Sep 15, 10:17 UTC · 1d agofirst Sep 10, 15:49 UTC · 5d agoExploit / PoC in the wild 20 sources1

Update Chrome now to protect against an actively exploited vulnerability

Google shipped Chrome 153.0.8010.36/.37 fixing 230 flaws including actively exploited V8 out-of-bounds write CVE-2026-87491 enabling sandboxed code execution.

Chrome stable channel updated to 153.0.8010.36/.37 for Windows and Mac and 153.0.8010.36 for Linux, including 230 security fixes. CVE-2026-87491 is an out-of-bounds write in Chrome's V8 JavaScript engine that a crafted HTML page can exploit to execute arbitrary code inside the browser sandbox; Google rates it medium severity, but it is confirmed as actively exploited. The update also fixes five Critical vulnerabilities, four of which were found in WebGL. Users should update via Settings > About Chrome and restart the browser.

Malwarebytes LabsSep 10, 10:52 UTC · 6d agoExploit / PoC in the wild 2 sources CVE-2026-874911

HBO Max’s verified Reddit account hijacked to spread malware

Cybercriminals hijacked HBO Max's verified Reddit account to run 108 ClickFix ads pushing AMOS and Amatera infostealers via fake HBO app sites.

Hudson Rock found that hijackers used HBO Max's verified Reddit account to run 108 malicious ads over roughly 48 hours promoting fake AI tools and macOS utilities. The ads led to HBO lookalike sites instructing victims to paste commands into Terminal or PowerShell, a ClickFix social-engineering technique ADAMnetworks dubbed PasteSwitch. macOS payloads included MacSync and AMOS infostealers targeting browser credentials, Telegram data, Apple Notes, passwords, and crypto recovery phrases; Windows users received the in-memory Amatera infostealer. The operation is also linked to cryptocurrency clipboard hijackers, and Reddit admins paused the ads and opened an investigation.

Malwarebytes LabsSep 15, 11:51 UTC · 1d agoMalware in the wild 7 sources1