There are many solutions that involve editing the Joomla Core files. This is bad idea, because you will have to do this every time you upgrade Joomla to a new version. In general changing Joomla core files is not recommended, and you should avoid it as much as possible.
If you accidentally changed WordPress address (URL) or Blog address (URL), and you cannot access your blog any more there is a easy solution to fix that problem by changing the option table in the WordPress database.
Researchers have posted a preprint that describes their method for factoring a number used for RSA 768-bit encryption.
SOURCE: By John Timmer | Last updated January 7, 2010 5:20 PM
With the increasing computing power available to even casual users, the security-conscious have had to move on to increasingly robust encryption, lest they find their information vulnerable to brute-force attacks. The latest milestone to fall is 768-bit RSA; in a paper posted on a cryptography preprint server, academic researchers have now announced that they factored one of these keys in early December. Continue reading “768-bit RSA cracked, 1024-bit safe (for now)”