"Medium Security" in IE8 states that `third-party cookies that save information that can be used to contact you without your explicit consent` are blocked.

What is the most broad P3P header that means we do not collect such information, and will not be blocked by IE?

I want to skip the nasty details of the P3P policy, and just set the header that implies the least legal obligations. Its semantic should be:

```
we collect everything except information that can be used to contact you.

```

... without specifying anything else.

Note that most P3P headers are inclusive - if they're not present, you're not allowed to use the information for that purpose - so the P3P header I'm looking for should contain a lot of flags.