CopyShield neutralizes website clipboard hijacking, stealth attribution tracking, and anti-AI prompt injection traps across the entire web.
Try copying any of the simulated malicious payloads below and paste into the inspector to verify.
Simulates hidden prompt injection text placed inside assessment questions to trick AI assistants.
Simulates news blogs that append unwanted copyright footers and links to copied text.
CopyShield operates directly at the browser execution root to stop clipboard manipulation dead in its tracks.
Intercepts the copy event at the document capture phase before any website listeners or bubbling scripts can tamper with data.
Automatically detects and removes hidden academic integrity traps (e.g. Coursera quiz traps) from copied questions.
Walks the entire ancestor tree to ignore hidden elements (.sr-only, clip: rect(0,0,0,0), 1px containers, scale 0, and off-screen nodes).
Wraps navigator.clipboard.writeText directly in the page context to prevent sneaky asynchronous clipboard overrides.
Cleans invisible zero-width unicode characters (\u200B, \uFEFF, \u2060) used to fingerprint and track leaks.
Easily exclude rich web applications like Google Docs, Figma, Notion, or Overleaf with a single click in the popup.
Cybersecurity Enthusiast • Ethical Hacker • Open-Sourcerer
Passionate about building practical cybersecurity tools, secure architectures, and privacy-enhancing browser software. Focused on cryptography, network defense, and post-quantum security research.
Get CopyShield running in your favorite Chromium or Firefox browser in under 60 seconds.
Navigate to chrome://extensions (Chrome/Brave) or edge://extensions (Edge).
Toggle on Developer mode and click Load unpacked. Select the extracted folder.
CopyShield is built on a strict privacy-first foundation:
chrome.storage.local.