If you suspect a site has been compromised, wouldn't a better approach be to submit this as a text article explaining your reasons rather than linking to the affected site? Depending on the nature of the hack, the title could easily have been:
Was Tumblr hacked in order to do drive-by malware installs? (tumblr.com)
Update: The GNAA says that the hack was part of an anti-blogging campaign.
> This was just another part of our "anti-blogging" campaign. GNAA's stance on blogging in general has always been a negative one: in short, blogging is lowering journalistic standards to the point where the number of friends a murderer has on Facebook has become news.
At the bottom of the spam post it says if you delete the post it will delete your Tumblr account. Since this spreads by people viewing it, it's probably important to point out that deleting the posts will not delete your tumblr account, and you should do it immediately so people viewing your blog don't get infected themselves.
The exploit uses a "data-uri script tag" in the video embed field. In other words, it runs some sort of script through the section of the site that's supposed to only allow video embed codes from sites like YouTube and Vimeo. A pretty serious security hole.
Looks like a Base64-encoded JS URI in the video player URL. Somewhat sneaky. How it ends up redirecting the page to a reblog URL isn't clear.
https://gist.github.com/4196142
Nothing particularly interesting seems to have actually happened. Some posts got onto the Dashboard, which was still running. In fact, everything was still working just fine.
Script kiddies found a small crack and went for it.
Who cares about the quality or the skill it took? If it's an unskilled attack, it's even worse. If script kiddies can break into your site, your security is alarmingly poor.
The things that matter during an attack: how much damage was caused, what kind of data was compromised, and how much it will cost to get things fixed. The quality of the attack is only a factor when it comes to cost/benefit of fixing the vulnerability.
