LuLu is a free, open-source firewall designed specifically to block unknown connections. Developed by security expert Patrick Wardle at Objective-See , it acts as a gatekeeper, alerting you whenever a process attempts to connect to the internet. This allows you to stop malware from "calling home" or prevent legitimate apps from uploading sensitive data without your knowledge. Key Features of LuLu LuLu - Objective-See
In today’s hyper-connected world, most Mac applications—and nearly all malware—constantly communicate with remote servers. While macOS includes a robust built-in firewall, it primarily focuses on blocking traffic. To gain full visibility into what your apps are sending out, you need a specialized tool like LuLu . What is LuLu for Mac? download lulu mac