Why do I suddenly have thousands more pages appearing on my website and they are not indexed

Hi everyone,

Why do I suddenly have thousands more pages appearing against google search console for my website and they are not indexed.

We are UK based and there appears to be 11,000 pages whcih have appeared around mid January.

Thanks for any help.

It can be this: https://community.shopify.com/topic/1886921

Shopify has a vulnerability that allows attackers to create dynamic pages on your store. See: https://support.google.com/webmasters/thread/191644928/bots-attacked-vulnerability-in-shopify-platform-to-make-millions-of-real-urls-which-google-indexed?hl=en

In Google see what are the indexed pages using site:your-store.com.

If you see a lot of junk pages don’t worry, you can clean them using robots.txt