Ive ran into a little problem today when it seems that some spammer used a vulnerability in and older version of wordpress and was able to inject stuff into my database.
To give you an example
google news picked up the feeds that the hacker injected.
Now my question is how did this happen and how can i prevent this from happening. Will this issue be fixed if and when i upgrade to the newest version ? IF i must upgrade to the newest version will this have any effect on my theme ?
Any help would be greatly appreciated.
Thank you all for your time