In a recent post to his blog Brian Teeman asks the question of Joomla users and developers - "can you trust your Joomla extensions?"

Sadly in the last 6 months there have been two published circumstances where an extension provider has been hacked and malicious code inserted into the extensions that they offer. This meant that as soon as you installed the extension your site was vulnerable to defacement etc. If there have been two published cases perhaps there have been more that we don't know about. So is there anything we can do to prevent this?

There is a sort of checking system in place with the md5sum matching but it's not widely supported currently. Sites like the Joomla Extension Directory would be prime candidates for sharing this sort of information to help protect those with Joomla installs all across the web.

Brian also suggests a way to make it even more seamless - integrate the md5sum checking into the Joomla code itself to make it even simpler for users to verify they they've gotten the write package from the right source (with the right code inside).