Can someone verify ownership of my site by adding a meta tag to the body of my page?

I’m worried that someone might be able to inject meta tags into the body of my content, so they could add a “verify” meta tag and control my site in Google’s webmaster console. Will that work? Or do you trust meta tags only in the HEAD section?
Matt Cutts, Mountain View

Learn more about verifying ownership of your site in Webmaster Tools using a meta tag:
http://support.google.com/webmasters/bin/answer.py?answer=35659

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