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It seems obvious to me that electronic security took a significant step forward in 2001. Security through obscurity is always the subject of heated debate, although the relevant parties often wish it wasn’t, since no one likes their dirty laundry being aired in public. The term ‘blended threats’ has become synonymous with viruses in the last year. Web services may be critical for business but leave you wide open to attack. Abhishek Chauhan looks at protection techniques There is always a trade-off between security needs and economics. Richard Starnes asks how businesses can strike the right balance. Digital attacks often mirror attacks in the real world. Illena Armstrong asks if they are inevitable and how to respond. The widespread impact of the SQL Slammer worm in January 2003 highlighted an issue that most security professionals see as a basic fact - IT system security is not based on a single installation, but on an ongoing management of risks and vulnerabilities. Proper use of the internet is becoming vital for corporations and public organizations. "Though the enemy be stronger in numbers, we may prevent him from fighting. Scheme so as to discover his plans and the likelihood of their success. Rouse him, and learn the principle of his activity or inactivity. Force him to reveal himself, so as to find out his vulnerable spots." Sun Tzu, The Art of War It’s an axiom of software development that every program will contain between five and 50 bugs per 1,000 lines of code. And five is reckoned to be only the most optimistic result; the reality is much closer to 50.

TOS stands for 'trusted operating system.' It can also be used to protect servers that are providing DNS, as well as file servers, database servers, proxy servers and mail servers. TOS can protect any static files, including whole directories, drives, Windows registries and, of course, web pages.

A couple of years ago privacy advocates were bringing cookies, and the privacy issues related to them, to the attention of the general public.