SecureClipX

SecureClipX offers a fresh alternative to your system's default copy-paste function, designed to stop sensitive data from leaking via the system clipboard.
SecureClipX only does these three things:

1. Monitors the system clipboard, saves any new content right away, and clears the system clipboard.
2. Pastes the saved content from the secure vault when you press ⌘V.
3. (Optional) Automatically desensitizes your copied data to strip out sensitive information.