Thanks for the comment, I think that blockstack.org is already working with a decentralized DNS, I need to review more information, but that is what I remember right now.

Now that I think about it, I think the .eth domains are working on Etherum smart contracts, so they would also be a good example of this.

We still have to wait some time to see how viruses evolve, it is scary to think they get a way to create a virus that destroys blockchain technology, it sounds like an impossible thing, but the future is always unpredictable.