We posted about this back in May but it’s really worth re-iterating: Google are strongly encouraging that all websites use an SSL certificate to secure traffic – even if you are only running a brochure site.
On our previous post we explained what HTTPS is and how it works: What is HTTPS and why is it important?
We want to highlight this part of the Google blog post on HTTPS (our emphasis in italics):
“For now it’s only a very lightweight signal—affecting fewer than 1% of global queries, and carrying less weight than other signals such as high-quality content —while we give webmasters time to switch to HTTPS. But over time, we may decide to strengthen it, because we’d like to encourage all website owners to switch from HTTP to HTTPS to keep everyone safe on the web.”
Read the full Google post here: HTTPS as a ranking signal