If you have - or want to have - multiple #Joomla installs on one web hosting account, avoid nesting them inside of the main Joomla install. Not only is this a better way to manage and keep track of the files of multiple Joomla installs, it will keep them separated and help avoid all sites being compromised if one of them is hacked or infected with malware. How to install and setup multiple Joomla sites in different subdomains is what is what today's #maintenancemonday is all about.
The default database table prefix for Joomla installs is JOS_. This is common knowledge amongst people who want to hack your Joomla site. You can nullify this knowledge, and make your site one step more secure, by changing your Joomla site's database table prefix to something else. How to do so using myjoomla.com is what today's #maintenancemonday is all about.
If you have forgotten your #Joomla super admin password, or are helping someone who has forgotten their own password for their Joomla site, and you don't feel comfortable using some of the other database methods that do so, using "FC-Password" is a great alternative. FC-Password is a little file you upload to the same folder as your Joomla install. It gives you a list of all your users and allows you to reset the password of one of them. How to change a lost or forgotten Joomla Admin password with FC-Password is what today's #maintenancemonday is all about.
The Log folder is a great place to look for information when troubleshooting things on your #Joomla site. Where your log folder is located and where it should be located can often be two different things. Where your Joomla log folder should be, and how to move it there if it isn't, is what today's #maintenancemonday is all about.
It's one thing for a #Joomla extension to have an honest, vulnerability by mistake in it. But when crypto mining scripts are intentionally being put in a Joomla Extension: Mama ain't got no time for that! Whether the vulnerability or hack is there by mistake or on purpose, you need to use the Joomla VEL - Vulnerable Extensions List - to help keep your and your clients' websites safe. Using the Joomla Vulnerable Extensions List is what today's #maintenancemonday is all about.