Dnia 20.09.2021 o godz. 23:41:11 John Levine via mailop pisze: > It appears that Jaroslaw Rafa via mailop <r...@rafa.eu.org> said: > >It is possible, but eu.org is on the Public Suffix List, so different > >subdomains of it shouldn't be "merged", like for any other domain in the PSL. > > The PSL, despite being used by pretty much every web browser in the > world, is a small project run by volunteers using a github site. It is > not official or authoritative for anthing. > > Its only purpose is to prevent cross-site cookie attacks, which it > does pretty well. Many people try to use it for other purposes, which > it does a lot less well. In particular, if anyone imagines that the PSL > would be a get-out-of-jail free card for domains that have terrible > mail reputations because they give away subdomains to anyone for free, > it isn't.
But what is the meaning of a domain being on PSL? It means that if example.org is on PSL, then one should be aware that sub1.example.org and sub2.example.org have nothing in common, ie. they *should not* be treated as being parts of the same entity (like for example sub1.company.com and sub2.company.com, when "company.com" is NOT on PSL, *should* be considered parts of the same entity company.com). That is the semantics behind PSL, and that is the reason why PSL has any sense at all in preventing cross-site attacks. But if PSL is good enough to distinguish independent domains for the purpuse of preventing cross-site attacks, it is also good enough for distinguishing independent domains with regard to their reputation. What I want to say is, when example.org is on PSL, reputation of sub1.example.org SHOULD NOT have impact on reputation of sub2.example.org, as they are usually independent entities. -- Regards, Jaroslaw Rafa r...@rafa.eu.org -- "In a million years, when kids go to school, they're gonna know: once there was a Hushpuppy, and she lived with her daddy in the Bathtub." _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
