How to Wrestle Your Data From Data Brokers, Silicon Valley — and Cambridge Analytica

Making statistically informed guesses about Americans’ political beliefs and pet issues is a common business these days, with dozens of firms selling data to candidates and issue groups about the purported leanings of individual American voters.

Few of these firms have to give your data. But Cambridge Analytica is required to do so by an obscure European rule.

How You Can Request Your Data From Cambridge Analytica:

1. Visit Cambridge Analytica’s website here and fill out this web form.
2. After you submit the form, the page will immediately request that you email to data.compliance@cambridgeanalytica.org a photo ID and two copies of your utility bills or bank statements, to prove your identity. This page will also include the company’s bank account details.
3. Find a way to send them 10 GBP. You can try wiring this from your bank, though it may cost you an additional $25 or so — or ask a friend in the UK to go to their bank and get a cashier’s check. Your American bank probably won’t let you write a GBP-denominated check. Two services I tried, Xoom and TransferWise, weren’t able to do it.
4. Eventually, Cambridge Analytica will email you a small Excel spreadsheet of information and a letter. You might have to wait a few weeks. Celeste LeCompte, ProPublica’s vice president of business development, requested her data on March 27 and still hasn’t received it.

https://www.propublica.org/article/how-to-wrestle-your-data-from-data-brokers-silicon-valley-and-cambridge-analytica#143274