The source code of your site shows which WordPress version it runs. Bots search for that number to find sites with a known hole.
A visible version number is an invitation: a bot that knows a hole in that version tries it straight away. Hiding the number does not make an old version safe, but it keeps your site out of the easiest searches.
This is part of the security check, a separate check next to the crawl, in Studio and Bureau, and only on a site you have verified. Snaglist only looks at what any visitor can see from outside. It never logs in, guesses no passwords and sends no attacks. It reads the generator line and the version numbers behind the scripts and stylesheets on the homepage.
In the report for your client this appears under the heading "Your site tells which WordPress version it runs". When everything is in order, the report says: "The WordPress version is not on display".
Snaglist checks every page of your site, for this issue and all the others. Start for free, no credit card needed.
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