I think degree is Computer science and software engineer would offer a better job prospect that the other degree you have mentioned. In these you if you have knowledge about your course then you will always grow in your jobs.
Coming to the latter part of your question then know one site that offer the list of colleges that are accredited and are know in the field of online education. http://www.thedegreeexperts.com/online-college.aspx here is the complete list of colleges that offer online degrees in almost every filed. Tuition fee that is charged on specific courses is mentioned there select the one that suits your budget.
Network Security is in demand. Its probably the one that’ll land you a job first.
Software engineering is also high in demand – and the pay is always VERY good.
Computer Science is also a good degree, but I’ve heard better stories from graduates with the above two majors.
I’m not sure about online colleges, but you should definitely do a bachelors.