Quarantine is for any executable downloaded from the Internet. It doesn't prevent it from being opened, it only marks it to be checked for malware.

▲

pirates 9 days ago | parent | next [-]

In my experience the quarantine flag gets added if the file is downloaded via browser, chat program, email, or some other way that isn’t curl/wget/other CLI tool. At least for the past 6-8 months this has been my experience. Not that it excuses anything, but for what I have had to deal with it’s been somewhat helpful.

▲

jagged-chisel 9 days ago | parent | prev [-]

It definitely adds hurdles to running it.

	▲	LoganDark 9 days ago \| parent [-]
		Usually the hurdle is just a pop-up informing you that it's been downloaded from the Internet. Sometimes the malware checks go wrong though and try to prevent you from opening it at all.