MIT Technology Review: Cops see an encryption problem. Spyware makers see an opp
ortunity..
[1]https://www.technologyreview.com/s/614898/cops-see-an-encryption-problem-spyw
are-makers-see-an-opportunity/

References

   1. https://www.technologyreview.com/s/614898/cops-see-an-encryption-problem-spyware-makers-see-an-opportunity/