Migrate to HTTPS Before July’18 to Avoid Being Flagged as “NOT SECURE” By Google 

Having a secure website is now a necessity rather than just an advantage. Migrate your website to HTTPS before July 2018 to avoid being labeled as “not secure” by Google. Read on to know more!
https://www.rockonit.com/blog/migrate-to-https-before-july18-to-avoid-being-flagged-as-not-secure-by-google