4Shadow provides real time analysis of potential malicious network activity, host-based anomalies, and system configuration checks, with alerting using the Notification Center. 4Shadow is a must have for individuals who often use public insecure networks such as at coffee shops, hotels, airports, universities, or simply for those looking to increase the security posture of their system. Because 4Shadow runs in the OS X Application Sandbox, users can rest assured that 4Shadow itself will not give an attacker an opportunity to compromise their systems.

Open 4Shadow, perform minor initial configurations, minimize, and then continue with your daily activities with more confidence that your system is being protected!

What’s New

Version 2.2.3

Fixes a crash that could occur when repeatedly toggling network safety monitoring.

Ratings and Reviews

TKshelby ,

Can not white list process

Like app. Nice to see processes that are reaching out to internet, or escalating their privileges. Need more whitelist control.

Background: I wanted to keep my eye on a few processes before I decided if I wanted to whitelist them, or not (e.g., offfice365service). Now that I have decided I am not too worried, I can’t get the app to give me the whitelist option again.

Sorta expected that functionality to be there.

Left message with developer 2 days ago or so, no response.

Hurricane Sugar ,

Good stuff

Let's me use open and shared networks with confidence.

eronbrent ,

great UI update!

The new UI is clean and simple. 4Shadow is the intrusion dectection app for Mac OS X. It’s a great app!


Novacoast, Inc.
2.6 MB

OS X 10.7 or later, 64-bit processor


English, Spanish

Age Rating
Rated 4+
© 2011 Novacoast


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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