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)
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Block the Intermediate CA on your windows computer Download the certificate to your computer or just click “Open”.
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