Last edited Sat Aug 13, 2022, 06:32 PM - Edit history (1)
Indeed, browsers and apps flood the internet with requests. The trick is knowing what to look for, such as "call home" requests to developers, many in China, C&C (command and control) servers, or other things out there.
Blockers such as ublock origin only filter browser requests.
One could conceivably do this with a packet filter. I never used Little Snitch because it costs money and I favor free and open source software, and have not been in a sysadmin position for a long time, just a user.
As you said, it's heavy duty data parsing.
A bit off-topic ( I would have to upgrade systems to use LS)
I am currently fighting the recurring losing game of getting a new iOs device that won't back up to a mac unless the mac is upgraded. Last estimate was over a day for the download. I won't do iCloud backups because Apple has a key to iCloud backups and gleefully (?) gives it away to anyone with a warrant.
BTW, most routers are set to allow unfettered data passage if an app initiates the request ("connection established" ) so identifying suspicious requests is thr first step.
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