Symantec has gotten in hot water for issuing rogue certificates (source). While Symantec has agreed to certificate transparency, Blue Coat systems is a known operator of MITM services they sell to enterprises, nation-states and governments, and this certificate would allow Blue Coat to issue arbitrary MITM certificates.
OSX instruction can be find over here (By Filippo Valsorda)
Block the Intermediate CA on your windows computer Download the certificate to your computer or just click “Open”.
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