Yes—KProxy has been tied to malicious Chrome extension activity impacting over 3.2 million users in a global campaign. Attackers leveraged the KProxy extension to inject scripts, bypass browser security, and exfiltrate user data. Learn how to stay safe, detect threats, and secure your proxy usage.
What Is KProxy and Why Do People Use It?
KProxy is a free web-based proxy that allows users to browse the internet anonymously. It masks your IP address, bypasses geo-blocks, and provides access to restricted content. KProxy offers both browser-based proxy access and Chrome/Firefox extensions.
Popular KProxy use cases include:
Accessing blocked websites or services (like social media or streaming)
Bypassing workplace or school firewalls
Protecting identity while browsing
Testing geo-specific SEO and marketing tools
While many users turn to KProxy for its free and easy-to-use platform, recent investigations have raised serious red flags regarding malware, security exploits, and privacy risks.
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KProxy Malware Alert: What Security Researchers Found
In February 2025, GitLab's Threat Intelligence team published a deep technical analysis identifying KProxy's Chrome extension as part of a malicious extension campaign affecting over 3.2 million users. Here’s a breakdown of the risks and how the malware works.
🧠 Key Findings:
The KProxy Chrome extension contained malicious service worker scripts that loaded external JavaScript payloads.
These payloads stripped Content Security Policy (CSP) headers from websites—exposing users to cross-site scripting (XSS) attacks.
Obfuscated scripts secretly ran in the browser, exfiltrating data, injecting affiliate tracking, and rerouting users to monetized campaigns.
The extension was tied to a broader operation involving over 16 extensions—including screen recorders, adblockers, and emoji keyboards.
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How the KProxy Malware Works
The attack chain used in the malicious KProxy extension is highly sophisticated and includes:
1. Extension Takeover
Threat actors likely acquired access to the original extension via phishing or direct purchase from the developer.
2. Malicious Update
They deployed an updated extension version through the Chrome Web Store with hidden malware in the background scripts.
3. CSP Header Removal
Using the declarativeNetRequest API, the extension stripped websites’ CSP headers, allowing injection of untrusted scripts.
4. Remote Script Injection
The extension contacted external config servers hosted on Bunny CDN and DigitalOcean. These servers dynamically loaded:
Obfuscated JavaScript payloads
Affiliate campaign scripts
Click fraud redirection mechanisms
5. User Tracking & Click Injection
Scripts executed on Amazon, AliExpress, Fiverr, and other platforms injected affiliate links and created invisible iframes—earning revenue for the attacker and compromising user trust.
⚠️ Risks to Users
Even if you downloaded KProxy with good intentions, you may be affected if:
You installed the Chrome extension anytime between July–October 2024
You got KProxy from a third-party site, not the official source
You noticed slow browser performance, unusual ads, or redirects
Possible symptoms:
Frequent redirects to ad-heavy sites
Suspicious browser behavior (tabs reloading, pop-ups)
Increased CPU or network usage
Personal data exposure via HTTP headers
How to Protect Yourself from KProxy Malware
1. Download Only from the Official KProxy Website
Avoid any Chrome extension claiming to be KProxy. The safest way to use KProxy is via its official web interface:
🔗 https://www.kproxy.com
2. Uninstall the Chrome Extension Immediately
Navigate to chrome://extensions and remove any KProxy-related extension.
3. Run a Full Antivirus Scan
Use tools like Bitdefender, Malwarebytes, or Microsoft Defender. Look for injected scripts, spyware, or modified system files.
4. Clear Cache and Browser Cookies
Remove residual malicious cookies or scripts by clearing all browser data. Reset browser settings if suspicious behaviors persist.
5. Use a VPN Instead
VPNs offer real encryption, reliable DNS leak protection, and fewer ads—ideal for securing your browsing. Avoid relying solely on free proxies.
Proxy vs. VPN: Which Is Safer?
Feature | Free Proxy (KProxy) | Premium VPN (e.g., NordVPN, ProtonVPN) |
|---|---|---|
Hides IP address | ✅ Yes | ✅ Yes |
Encrypts web traffic | ❌ No (partial at best) | ✅ Yes (strong AES-256 encryption) |
Protects browser data | ❌ No | ✅ Yes |
Prevents data exfiltration | ❌ No | ✅ Yes |
Blocks malware & ads | ❌ No | ✅ Some VPNs offer malware blockers |
Ideal for sensitive tasks | ❌ No | ✅ Yes |
What If You Already Installed the KProxy Extension?
Follow this recovery checklist:
🔄 Malware Removal Guide:
Uninstall KProxy Extension
Run Antivirus & Antimalware Scan
Delete browser cache, cookies, and local storage
Reset browser settings (optional)
Check for unknown extensions or Chrome apps
Reinstall only from the official site—if needed
Switch to a secure VPN for ongoing use
FAQs
Not always. The web-based version may be safe if used directly, but the Chrome extension has been tied to malware campaigns and should be avoided.
Yes—especially if downloaded from unofficial sources or through browser extensions. Malware was observed in its Chrome extension.
No. As of early 2025, it has been removed after abuse reports surfaced.
Watch for browser slowdowns, unexpected redirects, or ad pop-ups. Run antivirus scans and check extension permissions.
Indicators of Compromise (IOCs)
These extension IDs have been linked to the campaign:
gdocgbfmddcfnlnpmnghmjicjognhonm— KProxybpconcjcammlapcogcnnelfmaeghhagj— Nimble Capture- Others: Blipshot, WAToolkit, Emoji Keyboard (full list available here)
Associated domains:
kproxyservers[.]siteapi.nimblecapture[.]combonusbuyer[.]netadblockforytextension[.]com
✅ Conclusion: Stay Private, But Stay Safe
KProxy’s association with a malware operation underscores the risk of using free tools without scrutiny. While the service may have benefits, the risks of extension-based malware are real.
🔒 Final Tips:
Avoid installing browser extensions tied to proxies
Always check app permissions and source URLs
Use reputable VPNs with audited privacy policies