When a username is created properly it serves as additional security. Use of a complex username diminishes risk of malicious algorithms being able to predict credentials.
“Web Scraping” is a practice of data extraction used for market intelligence, but it can also be used nefariously. Bots operating at the direction of bad actors can harvest specific content from any website or social network that’s then manipulated. For example, bots can scrape leadership name data from a corporate website later used in credential-cracking script for potential usernames.
Don’t choose an easy to guess username like first name only, “admin” or “user” and refrain from using your email as your username. Also, be sure to change your network’s default “admin” username to a complex one!