Is there a penalty for auto backlinking with ScrapeBox?

People widely use programs like ScrapeBox to build backlinks. Sometimes, it is believed that one cannot compete without such backlinks. An important action is to post links in comments to blogs. I think having good list of blogs for commenting is more important than the software. However, there are common lists as everybody use.

I wonder won't search engines (like Google) trace these lists and penalize backlinks in comments? As I checked some of the blogs in the autoapprove lists, they have hundreds of comments with links.

How program like ScrapeBox can be used to post safe backlinks?

Naah, it's totally safe, 50,000 backlinks in a day, how can that be suspicious?

It can be found from the number of links in a page, and even crawler can detect links in comments only. Moreover, the lists which are distributed in communities can be found by Google anti-spam team too.

Anyway, I do not know, I am asking indeed.Discussing my doubts.

If you make that many low quality links all of a sudden, you'll likely get hit by some sort of Google Penalty. I would highly recommend against it.

Then, what is your recommendation for blackhat backlinking ?
A few high quality blogs to be autocommented?

I read that you're supposed to backlink to a secondary site and have it forward the people who visit it to your main site so you don't get busted. I'm a noob though, so don't take that as a fact. I could be completely wrong.

If you want to be 100% safe just build scrapebox links on your tiers only and not directly to your main site.

Do it if you want to negative SEO a site.