Google defines social engineering as “- deceptive tactics that try to trick you into doing something dangerous, like installing unwanted software or revealing your personal information (for example, passwords, phone numbers, or credit cards).”

On Feb 3, 2006 Google announced this:

“Will my site be affected?

If visitors to your web site consistently see social engineering content, Google Safe Browsing may warn users when they visit the site. If your site is flagged for containing social engineering content, you should troubleshoot with Search Console” – source (Google)

I still see shady sites doing this (July 2019) showing up in Google SERPs, which is kind of weird and worrying.