Free · Windows · macOS · Linux · v0.2

Free PC protection that learns from your workspace.

An honest desktop app. On-demand malware scanning, PC cleanup, network guard, and startup control — every finding feeds the same adaptive engine that protects your APIs.

First launch — read this

Shield is unsigned (Apple/Microsoft code-signing certificates cost $99/yr and $300+/yr respectively — we're not there yet). Your OS will warn you on first launch. That's expected. Here's the fix per platform.

macOS
"App is damaged and can\u2019t be opened"
  1. 1.Unzip the download
  2. 2.Drag "Veriloop Shield.app" into /Applications
  3. 3.Open Terminal and run the command below (this removes Apple’s quarantine flag; you only do it once):
xattr -dr com.apple.quarantine "/Applications/Veriloop Shield.app"

Then double-click the app. It will open normally from now on.

Windows
"Windows protected your PC"
  1. 1.Unzip the download
  2. 2.Double-click "Veriloop Shield.exe"
  3. 3.When SmartScreen appears, click "More info" then "Run anyway"

Windows only warns on the first launch.

Linux
Permission required
  1. 1.Unzip the download
  2. 2.Open a terminal in the unzipped folder
  3. 3.Run the command below to make it executable, then launch it:
chmod +x "Veriloop Shield" && ./"Veriloop Shield"

On Wayland/GNOME you may need libnss3 installed.

Capabilities

What Shield does

Malware scanner

Hashes your files and checks each one against MalwareBazaar's public malware feed. Signature-based, honest, and updated hourly.

PC cleanup

Finds reclaimable space in browser caches, temp folders, old downloads, and large files. Moves to the recycle bin — never a hard delete.

Network guard

Watches outbound connections and warns when your machine contacts a known-abusive IP. Bundled abuse list, no telemetry.

Startup manager

Lists everything that auto-launches — the real registry / LaunchAgents / autostart entries — and lets you disable them.

Quarantine

Suspicious files move to a locked folder with an audit log. Restore or delete forever at any time.

Scheduled scans

Daily or weekly quick scans while Shield sits in your tray. Results feed your Veriloop workspace.

Honest about limits

Real antivirus needs a signed kernel driver, code-signing certificates, and a paid signature feed. Shield is not that. Here's exactly what it is and isn't:

✓ Does
  • · On-demand hash scanning against MalwareBazaar
  • · Cleanup with recycle-bin (undo) safety
  • · Outbound connection monitoring + warnings
  • · Auto-start enumeration & disable
  • · Feeds every event to your Veriloop workspace
✗ Doesn't
  • · Real-time file-system protection
  • · Rootkit or boot-time scanning
  • · Heuristic detection of unknown malware
  • · Packet-level network blocking

One loop across cloud & endpoint

Shield reports to /v1/evaluate. Your workspace's Events tab shows a device badge. The adaptive weights that learn from your API traffic also learn from your desktop.