Personal Data may be shared with MZLA affiliates, including Mozilla Foundation and Mozilla Corporation, to facilitate customer service, marketing, order fulfillment, billing, technical support, and legal and compliance obligations.
Subprocessors and Service Providers: We may use vendors to provide services on our behalf, including hosting, marketing, social, analytics, support ticketing, credit card processing, or security services. They are bound by contractual obligations to ensure the security, privacy, and confidentiality of your information. Please visit this page to see our list of Subprocessors.
So second block is basically "even though we market ourselves as a privacy service, we're going to share your data with a bunch of third party companies for stuff like marketing, social, and analytics (gee, I wonder what companies those could be), but they promise to not share with anyone else (unless they have sub contractors too).