One of the newest trends in IT is consumerisation, and if you don't already know about it, you soon will. It's the idea that new technologies, the cool stuff people want, will become available for the consumer market before they become available for the business market. What it means to business is that people -- employees, customers, partners -- will access business networks from wherever they happen to be, with whatever hardware and software they have. Maybe it'll be the computer you gave them when you hired them. Maybe it'll be their home computer, the one their kids use. Maybe it'll be their cell phone or PDA, or a computer in a hotel's business center. Your business will have no way to know what they're using, and -- more importantly -- you'll have no control.
In this kind of environment, computers are going to connect to each other without a whole lot of trust between them. Untrusted computers are going to connect to untrusted networks. Trusted computers are going to connect to untrusted networks. The whole idea of "safe computing" is going to take on a whole new meaning -- every man for himself. A corporate network is going to need a simple, dumb, signature-based antivirus product at the gateway of its network. And a user is going to need a similar program to protect his computer.
Bottom line: antivirus software is neither necessary nor sufficient for security, but it's still a good idea. It's not a panacea that magically makes you safe, nor is it is obsolete in the face of current threats. As countermeasures go, it's cheap, it's easy, and it's effective. I haven't dumped my antivirus program, and I have no intention of doing so anytime soon.
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