What is a new kind of referral spam?

Question

Google

Strange traffic from Google started coming in, 30 hits at a time, search query unknown, 100 percent bounce.

Is this a new kind of referral spam? How to filter it?

Answer 1

And then referral spam. Just someone killing your behavioral factors

Answer 2

1. Check if the analytics code is set correctly. I had a case, though with Yandex.Metrica, the same 100% bounce rate. It turned out that when installing the code, they were smart, the same code was installed twice.
2. Write / call (this is better) to Google.

Answer 3

I turned off the "Filter spiders" checkbox in the analytics settings. Those Google support suggested where to turn it on. Let's see how it will filter such requests.