When will people learn that an open Wifi is not secure!
(not claiming this is what actually happened here!)
There are a huge number of WordPress sites. TNW use the word 'Hacked' like it took some level of skill and you end your line with ... which implies a weakness in the software.
It is not the software here that is at fault. The lack of good information out of TNW along with the fairly ridiculous penultimate paragraph of drama would suggest it was them being lax with the security they had control of which caused this to happen.
- Exploiting some Wordpress flaw - Social engineering - Weak passwords - Bruteforce
Wordpress has a bad record on security http://packetstormsecurity.org/search/?q=Wordpress , so yes, I'm implying a weakness in the software.
Linking to a Packetstorm search does not show if core files are involved, if it is a plugin or if the report itself is invalid. The other 3 are not exclusive to WordPress.
If you are right then each report on each site will tie it together. I say it will not because already you can see that no-one is pointing fingers at WordPress itself.