So I think that the story around PRISM specifically is a bit confused. PRISM was initially reported as mass collection of data by the NSA, and Google has repeatedly denied that they took part in that. They do co-operate with targeted national security letter investigations, and with police with warrants, but they are known to challenge both. Quoting the page you linked to:
Google cares deeply about the security of our users' data. We disclose user data to government in accordance with the law, and we review all such requests carefully. From time to time, people allege that we have created a government 'back door' into our systems, but Google does not have a backdoor for the government to access private user data. Any suggestion that Google is disclosing information about our users' internet activity on such a scale is completely false.
Here is some details about the hack the NSA did on Google's infrastructure: https://www.washingtonpost.com/world/national-security/nsa-i...
You should also disclose that you work in the National Security industry, at a Palantir equivalent in Australia.
Wow! This made me laugh. We fund (and sometimes work on ourselves!) research on things like contagious disease prediction, and things like trying to understand mass social actions like elections. Yes, it is national security related, but not exactly that kind of national security! Sometimes the same agencies are involved though - for example, the same agency provides disease alert advice to government as provides political instability advice. So I guess maybe that makes me untrustworthy or something?
I can talk to you at great depth about Dengue Fever modelling and possible ways to try to derive parameters for mosquito breeding models if you like - it's pretty interesting, and maybe that would help some?