If we take all the IT sectors dominating the world stage, this field is one of the largest and most all encompassing. It would take decades to train to become an authority in all elements, and so specialisation is vital to some extent. Cisco and Microsoft are the two main companies dominating this particular sector. MS produce Network & Server software, while Cisco concentrate largely on the hard-ware end of networking: Routers, data switches, controllers and so on. It has become commercially necessary for MS and Cisco to move into security over the last decade. We also needs to notice the the greater commercial use of Wi-Fi now, which is basically wireless connections & hard-ware. Lastly, 2 very important and growing sectors within the security market are Digital Forensics and Ethical-Hacking.

Industry recognised certifications can be attained from the suppliers themselves and vendor-neutral organisations. A number of well regarded independents are today offering progressively more appropriate & important certifications. The need for grasping converging technologies and inter-connectivity in networks has become well appreciated. There are currently a number of seismic shifts coming about in networking - both in terms of processing and in the storage of data, with internet-based computing gaining momentum and 'green I.T.' getting to be more and more relevant. From the business perspective, 'greener' engineering must be designed to be more cost-effective, as well as being less harmful to the planet. Lower-power processors and computer systems create less heat, therefore much less cooling is required. Energy expenses can often be substantially reduced for businesses like data-centres which are large technology-users.

A number of the best industry-recognised accreditations now come from the vendor neutral Computing Technology Industry Association ('CompTIA'). Some other bodies also supply worthwhile qualifications, such as CWNP (Certified Wireless Network Professional) and 'ISC2' (International Information Systems Security Certification Consortium). Obviously, there's a whole variety of certification sets from Microsoft and Cisco. Because there are so many training & job possibilities in this sector, it's sensible to get more in-depth guidance from an experienced advisor prior to selecting your particular route. Without any individually-tailored guidance you could head-off in a wrong direction & waste a lot of money and/or time.

Digital (or Computer) 'Forensics' is reasonably new on the scene - TV shows such as Crime Scene Investigation may have familiarised us with the term. Clearly though the actual role in real life won't always be quite so stylised as the shows might have us think! Having said that, technological forensics provides an intriguing job for many professionals right now. The role involves seeking & interpreting digital-footprints that can be used for data recovery or legal cases.

Seated between Digital Forensics and Security, comes the field of 'Ethical Hacking'. Seasoned I.T. professionals can learn the concepts of 'criminal' hacking for ethical security purposes. The EC-Council delivers mid-high level qualifications, namely the CEH ('Certified Ethical Hacker') & the 'CHFI' (Computer Hacking Forensic Investigator).

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