클릭픽스(CklickFix) 공격, PC·맥 감염으로 확산 중

Text settings Story text Size Small Standard Large Width * Standard Wide Links Standard Orange * Subscribers only Learn more Minimize to nav It wasn’t that long ago that ClickFix attacks were exotic. Now the technique has become mainstream as attackers reap its simplicity and effectiveness in infecting users of PCs and Macs alike. All that’s required is a compromised website—a painless enough task—a fake CAPTCHA overlay, and the inclusion of a single terminal command. So many visitors get suckered into pasting and running the command that just about every malware pusher has adopted the technique. Even Kremlin-backed hacking groups are joining in. “Reddit is becoming post after post after post of people getting their computer infected via ClickFix,” independent researcher Kevin Beaumont observed Thursday . “Legit websites everywhere [are] getting hacked to serve the fake captcha prompts.” How many of us make things worse More seasoned Internet users—a fair number who read this site—are quick to dismiss the attack. They typically blame the people who fall for the scams and marvel at their gullibility and lack of attention. The reality is that for more casual users, using computers and the Internet has become so difficult—think impossible-to-close interstitials, CAPTCHAs with an endless series of pictures to analyze, and constantly changing interfaces that bury the features they’re looking for—that they have grown desensitized to instructions that seem ridiculous and burdensome. ClickFix attackers are capitalizing on this fatigue. Typically, attacks begin with a simple CAPTCHA image, often masquerading as one from Cloudflare. After engaging with the box, the user sees a line of text, often obscured in a way to mask any malicious commands. Then the user is instructed to copy the text and paste it into the Windows Run, PowerShell, or macOS terminal and click Enter. The instructions come from websites people have used for years. The directions seem no more suspicious than things they’ve been required to do for a decade. Why would someone without a firm grasp of computer security have any reason to hesitate? For the people behind the attacks, ClickFix now makes their job much easier. Prior to ClickFix, they would have needed to install the malware (tracked as Lorem Ipsum, security firm BlueVoyant said recently) using resource-intensive infrastructure, including SEO-manipulated and malvertised download portals, Microsoft-trusted signing certificates, and continuously rotated domains for delivering Microsoft Installer packages. “The pivot to ClickFix in late May 2026 eliminates the code-signing requirement entirely, substituting the legitimacy of a validly signed installer with a different form of legitimacy: a user voluntarily executing the malicious command in their own terminal,” BlueVoyant said. “[T]he ClickFix model broadens the victim pool from users searching specifically for Microsoft Teams to anyone browsing a compromised website.” The situation for macOS users isn’t any better. Both Mac security firm Jamf and a researcher have ​​documented macOS variations of ClickFix that can bypass Gatekeeper protections. ClickFix attackers keep finding new ways to use public services—including publicly published Google Sheets documents, according to Cisco Talos. Other attackers, including Russia’s state-sponsored Sandworm, are hosting their control infrastructure in blockchain-based smart contracts. Security firm Netskope recently found another campaign that used the same approach. The security company counted 5,400 sites beaconing to it, an indication of the reach and scope of that campaign. And as OS makers and defenders build new defenses, attackers keep finding documented ways to work around them. The upshot of all this is that ClickFix is a highly effective and efficient means of spreading all sorts of malware. It’s not going away, and victim-blaming or shaming only makes the problem worse. There are a fair number of plugins, standalone products, and built-in defenses that are designed to blunt the success of ClickFix attacks. For instance, BlockBlock, the software that monitors Macs for processes that seek to permanently install themselves, can block ClickFix attacks as soon as a user presses the ⌘+V keys. Ublock has been updated to do something similar. Beyond those fixes, those of us with more security training should build awareness with our less experienced neighbors, family members, and friends. The mass adoption of ClickFix demonstrates its success, and it’s not going away any time soon. Dan Goodin Senior Security Editor Dan Goodin Senior Security Editor Dan Goodin is Senior Security Editor at Ars Technica, where he oversees coverage of malware, computer espionage, botnets, hardware hacking, encryption, and passwords. In his spare time, he enjoys gardening, cooking, and following the independent music scene. Dan is based in San Francisco. Follow him at here on Mastodon and here on Bluesky. Contact him on Signal at DanArs.82. 77 Comments