Google will begin using website encryption, or HTTPS, as a ranking signal – a move which should prompt website developers who have dragged their heels on increased security measures, or who debated whether their website was “important” enough to require encryption, to make a change to HTTPS.
HTTPS stands for HTTP over Transport Layer Security and is the standard for processing credit card transactions.
Google's announcement has drawn a lot of feedback from website developers and those in the SEO industry. Change is always a bit resisted. But the community at least acknowledge that they felt that something like this was in the works and are not surprised.