Clarification about admin edits to users'posts

Hi,

I’ve seen that some of my posts have been edited and added some admin tags such as:

<a target='_blank' rel='noopener noreferrer'   href='some_link'>This may be a link</a>

Can someone explain what noopener and noreferrer tags do ?

In case my posts were not correct, wouldn’t it have been fair to mention me as well ?

Can you please provide some links? I can take a look and see who made the edits.

Thanks,
Tom

I have seen a few ones. For example, check my first post here (edited 2 days ago for giving correct links, check initial post in raw mode):

Please answer the question: what do these tags ?

Hi HP,

The only edits done were by you. This might be something added by the platform. I need to spend some time looking into this.

Thanks,
Tom