Open source · On-device · Privacy-first

Quiet guardians for the everyday web.

rmthreat builds small, on-device browser extensions that each watch a different doorway — your clipboard, your code, your logins — and stay out of your way until something's wrong.

The family

Three guardians, one house style

Each is free, open source, and runs entirely on your device. Pick the doorway you want watched.

関所 Sekisho crest
Sekisho
Clipboard sentinel

Blocks ClickFix / pastejacking — pages that trick you into copying a malicious command and pasting it into a terminal. Cross-platform, instant, local.

ClickFixPastejackingPowerShellcurl | sh
目付 Metsuke crest
Metsuke
Repo interview guard

Read-only alerts for fake-interview malicious-repo traits as you open files on GitHub, GitLab or Bitbucket. It only warns — never blocks, modifies or uploads.

Fake interviewMalicious repoGitHub / GitLab
界 Kai crest
Kai
Login sentinel

On-device, explainable detection of credential-harvesting UI — fake login windows, browser-in-the-browser spoofs, cross-origin forms and seed-phrase prompts.

Phishing UIBrowser-in-the-BrowserSeed-phrase
House style

What every rmthreat tool shares

On-device

Detection runs in your browser and works offline.

Privacy-first

No IP, cookies, or personal data. Telemetry is opt-in or none.

Explainable

Every alert says what it saw and why, in plain words.

Open source

Auditable code on GitHub — no hidden behavior.