Security & Verification
McGraw Plus is 100% open source. Verify it yourself using VirusTotal or by reviewing the code on GitHub.
Verify with VirusTotal
VirusTotal is a trusted security service (owned by Google) that analyzes files using 70+ antivirus engines. You can independently verify our extension's safety.
How to Verify the Extension
Follow these steps to independently verify the extension is safe:
- Download the
.zipfile from GitHub Releases - Go to virustotal.com
- Click "Choose file" and upload the downloaded
.zip - View the scan results from 70+ antivirus engines
- A clean result shows 0/72 (zero threats detected)
Security FAQ
What does "0/72" mean?
VirusTotal scans files using 72 different antivirus engines. "0/72" means zero engines detected any threats — the file is clean.
Why should I trust this?
Don't trust us — verify it yourself! The code is open source on GitHub, and you can scan the file on VirusTotal before installing.
Is the code auditable?
Yes. The entire codebase is public on GitHub. Anyone can review every line of code.
Is my data safe?
Yes. The extension runs 100% locally in your browser. No data is ever sent anywhere — we don't have any servers.
Our Security Practices
100% Client-Side
All processing happens locally in your browser. No data is sent to external servers.
No Data Collection
We don't collect, store, or transmit any personal data. Zero telemetry, zero tracking.
Open Source
Our entire codebase is public on GitHub. Anyone can audit, review, or contribute.
Regular Updates
We maintain and update the extension regularly with security patches and improvements.
Ready to Get Started?
Download our verified-safe extension and enhance your learning experience.