You have produced an excellent article for us here dear friend.
You have shown us the duties and role of witnesses in the growth of the steem blockchain, as they ensures that the block is valid and that no false or malicious transactions have been included.

Witnesses must also ensure that their hardware and software are up to date, as this helps to secure the network from potential attacks.

Thanks for sharing this interesting article with us dear friend, and goodluck in this contest.