Suggest alternative CMS safer than Wordpress

Hello. Considering building a membership site.
With photo and video content which would be paid for via subscription model.
User data has to be real safe.
I heard from my friend who is an experienced developer that Wordpress is a such a vulnerable CMS for ecommerce, easily hacked. I trust his opinion so I am looking for alternatives. Can you suggest a CMS?

I don't write code from scratch but looking for a packaged solutions like Opencart or smth similar.

2. Video is heavy content and cannot be hosted on major videohosting platforms. Would you recommend finding a powerful hosting OR I also need to connect CDN for faster content delivery? Let's assume audience is from all over the world (content: erotica).

Thanks for your time answering those questions.

Drupal maybe ? Really good platform and more secured than WP.

You can try "Modx" according to my research its very secure CMS and also very good one..