Ideally the information (including POC exploits) that MS shares is customized to each party, so that there is some chance that the source of a leak can be ident

Ideally the information (including POC exploits) that MS shares is customized to each party, so that there is some chance that the source of a leak can be identified. Similar to behaviors in the intelligence community. A community of eighty partners is too large for that to be managed well, I expect.