When installing WordPress it is a good idea to change the default table prefix “wp_” to something else. It may not help with security that much, but there is no harm in making the quick change.
Don’t make the same mistake I did. Changing the table prefix after installation is very complicated. Well, complicated to me anyway.
Here is an article with a good following discussion about the default table prefix – https://www.wordfence.com/blog/2016/12/wordpress-table-prefix/
And here is a view from the other side of “the fence” – https://www.whitefirdesign.com/blog/2017/01/03/wordfence-spreads-falsehood-on-database-prefix-security-hardening-to-push-their-plugin/