Regarding Joomla Security, the problem was only with Joomla 1.5.6 and below (in 1.5.x version range) and now its fixed. To tell u a fact, Joomla has maximum number of Plugins, modules and components than any other CMS and thy all wrk perfectly cool...
Not having used Joomla, I'd be very comfortable doing this in Wordpress, especially using one of Brian Gardner's Revolution magazine themes -- I think his themes (and updates/ongoing improvements) are well worth it. I'm planning to use one shortly for a Wordpress project I'm working on.
I disagree that you need a template for Wordpress. Anyone with any skill at all can easily make Wordpress do anything.. Joomla is the last cms I'd use for a magazine style site.. Drupal would be better.. or Vivvo of course.
Go with Wordpress with a premium magazine theme and you will have your best CMS running on viagra lol
Wordpress with a magazine theme such as Brandford Magazin, Revolution (as already stated above), Polaroid, The Morning After and so on. There are plenty of Wordpress themes for online magazines and Wordpress is easy to use.
Judging by the WP support forums, it takes a fair bit of skill and still isn't necessarily easy! That's why the pro themes are great, all the hard bits have already been figured out!
Joomla is the way to go if you plan for an easly manageable and easy to update website as it allows for far more customisation and with the correct php/mysql/joomla knowledge you can build aditions to your hearts content or modify or use those that exist
I have used almost all types of CMS. And according to me , wordpress will be the best for an online magazines. It is easy to maintain and there are many themes related to a magazines like mimbo magazines.
I was testing both Joomla and Wordpress lately. My conclusion: Wordpress beats Joomla in terms of convenience. Joomla beats Wordpress in terms of addons and plugins. There are many things Joomla can do that Wordpress can't. However, Wordpress is the easiest tool for an online magazine.
I suggest you to try rapidvector www.rapidvector.com. rapidvector is a module based content management system. i am sure they will help you to create a online magazine website.
Joomla does not have a security problem. It deals well with about the same level of public exploits as Drupal. Wordpress seems like more of a security risk. Drupal is the easiest to keep up to date, including extensions, and Wordpress is the hardest. For doing an online magazine, Joomla is adequate. For a really high-end site, you might want to look into Alfresco, Bricolage, Plone, Drupal and other WMSes that are used for pro sites. Learning to use them can be a rather demanding process, especially Plone and Drupal. The Drupal admin interface is probably the most cumbersome, non-intuitive one. Joomla is not so good by itself for magazine or news site publishing if you need to have an issue/year/month system to organize the articles. That organizational system is really unneccessary as it forces a print-media architecture on web-media, but Jxtended Magazine is a great solution if you need a traditional print publication format online. However, it is a separate system and articles within it are not part of the core content system. No other content display extensions (or anything that takes content from the core content tables) will work with content items in this component. iJoomla Magazine is a cumbersome and below-average quality product, but it will work, which goes for everything else I've ever used from them. D4J Magazine is dated, old, seemingly dead, and not worth using. IIRC, it is only for Joomla 1.0. You may also find Joomla's core article manager crowded and ungainly with a lot of content. It also has a poor search engine, poor to nonexistent archival page function, limited content taxonomy, and no tagging--this all has to be added in with extensions. You can build some custom categories and content types with some free extensions that are not really ready for prime time yet, or else use commercial options. JoomSuite is one.