Google has long maintained that it must keep the workings of its search and ad-placement algorithms a secret, lest they provide a roadmap to the kinds of bad actors who'd like tweak the results and give their bad ideas (or sleazy products) pride of placement on its pages.
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In 2014, undercover Congressional investigators set out to test the countermeasures put in place to test the regulatory system that is supposed to detect and interdict terrorists who are assembling a dirty bomb -- countermeasures set in place after a red team found that it would be easy to do just that in 2007. They found that it was still very easy to beat all the detection systems. Read the rest