BlockBlock free download for Mac


22 October 2020

Alerts you to the addition of a persistent system component (beta).


BlockBlock continually monitors common persistence locations, and displays an alert whenever a persistent component is added to the OS.

What's new in BlockBlock

Version 1.1.0:
  • Big Sur compatibility
  • Plugin: kext monitoring
  • Improved XPC comms (thanks Thijs!)
  • New file monitor (with process caching)
  • UI improvements (status bar icon, rules window, etc)

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How would you rate BlockBlock app?

5 Reviews of BlockBlock

08 February 2018
Version: 0.9.7

Most helpful

The current version is
08 February 2018
Version: 0.9.7
The current version is
03 October 2017
Version: 0.9.8
These seems very interesting and potentially very useful. I have frequently wanted to watch for things that apps set and store on my system, now it's just a matter of seeing how far this app takes this concept. I've used to watch apps while they're active, but to have a log to go back to and find out what apps are doing and where they're sticking stuff will be fantastic. @developer, can you give us more details about this app as far as what it will track wrt "persistence locations?"
31 January 2017
Version: 0.9.7
Users should remember that it's still a beta, so there might still be some problems, but after some glitches and serious bugs in previous version, v0.9.6 and now v0.9.7 have been running great on my system 10.11.6. Needless to say, this is a very valuable security app. Everyone should use it.
18 January 2017
Version: 0.9.6
Ervins, Thanks for your review and for alerting us to the seemingly useful, and possibly great security apps at the developers site‼️ After I test them (there are 10 programs), I will review them here.

In reading his notes and "readme" files for each app, Patrick conveys a real concern with security; not like some who hype their products as ‘the last word’ in Mac security. This developer points out what he sees as both strengths AND weaknesses with his apps –– and his desire to improve them all as he moves forward. Very impressive array of programs and extremely detailed infos on all of his apps.

“OS X malware and security has been a personal passion for many years. However the more I learned about this topic, the more insecure I felt. Malware for OS X is trivial to write and unfortunately has become ever more pervasive. And, using attacks such as dylib hijacking attackers can easily bypass all current OS X security products.

As an avid Mac user, this worried me, so I decided to do something about it. Initially, this was for somewhat 'selfish' reasons; I simply wanted to write OS X security tools to secure my Mac. But then I thought, "hey, sharing is caring, I should make my tools publicly available, free of charge." This is the idea that drives the website.”

Patrick Wardle

Not to be missed, is his site’s Blog, where you will find an amazing trove of Mac security information, resources and a detailed overview of the ‘Mac malware’ culture we now find ourselves confronted with.

And as you pointed out –– he has a big heart when it comes to pricing :-)
He very quietly points out (at the very bottom of his site pages), that donations are welcome; but nothing is ‘crippled’

Nice find.
Ervins Strauhmanis
17 January 2017
Version: 0.9.5
A great tool for a cyber security warrior to have in her/his war arsenal. But let's face it that for many of us cyber is the life, most of it anyway sadly, and whether we want it or not, we need to secure our life just like we look after our physical security and security of our home. Be sure to check other security related tools by the dev. It's amazing how the author gives them all away for free.
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App requirements: 
  • Intel 64
  • macOS 10.15.0 or later
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