This may come in the form of outright data sharing or by using local third-party analytics software (such as Google Analytics, which collects a plethora of user information).

Note that whether the policy allows sharing aggregated user data does not affect this question.

If the personal data is encrypted when it passes through the third-party, it does not count as third-party access (as the data is inaccessible to that party).

If personal data has been made public by, for example, posting it to a blog, it does not count as private personal information (and is therefore not considered by this question).