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Topic

Malicious Browser Extensions

Browser add-ons, often disguised as AI assistants or other useful tools, that steal data, hijack searches, or otherwise compromise users who install them.

Current stories

securityConfirmed3 publishers

Fake Cloudflare checks on more than 100 hacked sites trick Ukrainians into installing Lunex Stealer

CERT-UA says attackers planted fake Cloudflare checks on more than 100 legitimate websites to get visitors to install Lunex Stealer themselves. Ontinue says its browser components can keep file access after the stealer is deleted, so cleanup has to reach the browsers.

Perspective Coverage

3 publishers
Builder
Builder 30%
Operator
Operator 62%
Investor
Investor 8%

Reality

Evidence72
Adoption
Not scored
Hype gap+10
Incentives25
Confidence70
securityOne report1 publisher

EfficientIP flagged ten .cyou domains 23 days before they fed a phishing site impersonating Alitools

EfficientIP put ten .cyou domains on its threat feed June 9, 23 days before they went live as redirects to a fake AliExpress site. The chain was designed to outrun reputation scoring, though its landing page had carried a phishing verdict since May 22.

Reality

Evidence45
Adoption
Not scored
Hype gap+25
Incentives55
Confidence50
securityOne report1 publisher

Hunt.io traces intrusions in four countries to AI agents running eight known exploits

Hunt.io says a Chinese-speaking operator drove Claude Code, Alibaba Qwen and DeepSeek through an orchestration framework called SecFlow, splitting reconnaissance, exploitation and collection among specialist agents that fired only publicly documented exploits.

Reality

Evidence46
Adoption30
Hype gap+18
Incentives62
Confidence45
securityOne report1 publisher

Sophos: Fake AI Installers Drove 30 of 38 AI-Linked MDR Cases, With Claude the Favourite Costume

A year of Sophos managed detection cases shows the AI threat that actually landed was a lookalike download page. Claude appeared in 26 of 38 incidents.

Reality

Evidence62
Adoption58
Hype gap−12
Incentives58
Confidence55