Blogging is supposed to be fun but it isn’t always like that. If you are hosting your own blog there is a great chance that one day a hacker may decide to target your site.
Upgrade
As good as it is, WordPress still has security issues. Upgrading to the latest version is a must if you want to lower the risk of getting your site hacked.
WordPress 2.6 includes better support for visiting the admin over SSL. Part of this support involves making sure authorization cookies are delivered only over SSL-encrypted HTTPS sessions. To accommodate this while still allowing the option of visiting the admin over plain http, 2.6 moves from a single cookie setup to a three cookie setup.