Objective See BlockBlock 2.5.2 for Mac
Mac UtilitiesBlockBlock is a free security tool from Objective See that keeps an eye on the places where software makes itself persistent on a Mac. Many good apps add login items or background helpers so they start again after a restart, but unwanted software does the same thing to survive. BlockBlock watches those locations around the clock and shows an alert the moment a new persistent item appears, so you can allow the items you trust and block the ones you do not.
Key Features
- Monitors common persistence locations, including login items and launch agents and daemons
- Alerts show the process behind the change, its path and signing details, plus VirusTotal links
- Allow or block each item, and your choice is saved as a rule for next time
- Extra protections can flag scripts and programs that lack proper notarization
- Free and open source, built on the Apple Endpoint Security framework
How to Download
- Download from the official site to get the current release from Objective See.
- Open the installer app inside the download and press Install, then approve the system prompt.
- Give BlockBlock Full Disk Access when asked, so it can watch the system in full.
System Requirements
BlockBlock runs on macOS 10.15 and later. Install needs an administrator account, and the tool asks for Full Disk Access because it relies on the system Endpoint Security framework to watch for changes.
FAQs
Does an alert mean my Mac is infected?
Not on its own. Plenty of normal apps add persistent items, including BlockBlock itself. Read each alert with care and allow only the items you recognise and trust.
What happens when I block an item?
BlockBlock removes the persistent item from the system and saves your choice as a rule, and every response is written to its log file for later review.
Is BlockBlock really free?
Yes. Objective See gives its tools away free of charge, and the source code is public so anyone can inspect how the tool works.
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