Most WordPress themes add a meta generator tag to the code. This tag is used to get the statistics of how many sites and using which WordPress versions. It looks like this in the browser:

The bad thing about leaving the tags there is that, any potential hacker can easily identify which version you are using. From another angle, if someone manages to find a security glitch in any WordPress version, he would be able to search for all blogs using that particular version.

One way that used to work was by deleting the tag from the theme. Open up header.php and remove this line:

<meta name="generator" content="WordPress <?php bloginfo('version'); ?>" />

I have found that removing this doesn’t fix this often. One sure shot way that always work is using functions.php to add a little code:

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