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USB Block
USB Block
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USB Block free download for Mac

USB Block

Version 2.6

Prevent data leakage.

Based on 1 user rateRead reviews & comments

USB Block overview

USB Block is a safe tool to prevent data leakage.

  • A authorization prompt will be displayed when a new USB device is detected.
  • Without your password, non-trusted USB devices will be automatically blocked when they are inserted.
  • There will be a notification displayed on the screen when a device is blocked.
  • Only whitelisted USB devices can be inserted without authorization prompt.

What’s new in version 2.6

Updated on Jun 14 2021

Version 2.6:
  • Run natively on Apple Silicon
  • Fixed known crashes
  • Improved the security of protection





2.4 MB

Developer’s website




App requirements

  • Intel 64
  • OS X 10.8.0 or later
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Jul 4 2018
Jul 4 2018
Version: 2.4.8
I haven't tried this, but it looks like a good idea if you work in an insecure environment. Say at work where people might easily siphon off your data if you leave your computer unattended. Of course other security measures are advisable, like locking your screen when you step away from your desk. But the more layers of defense the better, in my opinion. I don't know how real the scenario is but you see people surreptitiously downloading files to a thumb drive all the time on TV shows and in movies. I'll be interested to see reviews from people who actually need and use this app. Just remember to use a hard password. I give this app four stars even though I haven't tried it. It seems like one of those "why didn't I think of that" ideas, you know like ten years ago.