What are zones (e.g. zone 2, zone 3) ?

[ghost]

I saw in the change log that was mentioned:
"Trusted sources (like the Microsoft Community Package Manager Repository) will have downloaded files set to Zone 2. Other sources will have be set to Zone 3, and the file will be run through all local Anti-virus (AV) software by attachment execution services."

so I wanted to ask what are the zones exactly?

[DonEstefan]

A little known feature of NTFS is something called Alternate Data Streams, or ADS [...] It allows for storage of metadata for files residing on the filesystem. [...] This can include what zone the file was downloaded from, in this instance referring to the Internet Properties zones (Internet, Local Intranet, Trusted, etc) [...]

Zone Id	Zone Name
0	My Computer
1	Local Intranet
2	Trusted Sites
3	Internet
4	Restricted Sites

Taken from https://xkln.net/blog/identifying-the-source-of-downloaded-files/