This is a good article from Brian Krebs. It really makes you wonder what the heck is going on at Symantec. It seems like every company they buy turns into a huge security nightmare after they are controlled by Symantec… Research the debacle with RSA after Symantec purchased them…
https://krebsonsecurity.com/2018/07/lifelock-bug-exposed-millions-of-customer-email-addresses/