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Spam within the enterprise has undoubtedly evolved from an annoyance to a critical business problem. No approach to spam can work in isolation as unlike viruses, no single technology is able to stem the tide. I believe that by utilising the following top ten techniques an organisation can arm itself successfully against the menace of spam. The stark reality is that network security in this internet age is a race. This race starts every time a new virus, worm or vulnerability is discovered; and only finishes when either an organisation’s network is protected or compromised.

Clearswift MAILsweeper analyzes incoming and outgoing email at the internet gateway so organizations can implement management and security policies to block spam, viruses, inappropriate content, and comply with legal requirements.

The Sasser worm was the most prevalent malware in May, a month which was inundated by new viruses, according to antivirus vendor Sophos. I rarely make a bet, but if you asked me if I'd bet my bottom dollar on a firm employing a hacker to assess their security risk, I'd only accept on the basis that they would not. Hiring a hacker to assess the security risk of an organisation is something that fewer than 64 per cent of ISO's are willing to consider. That's hardly surprising when the risks are analysed alongside the statistics; viruses and hackers cost businesses worldwide somewhere in the region of $1.5 trillion. That said, organisations that are unwilling to hire a hacker face one increasing problem; hiring a hacker is not always a conscious decision. Windows Vista will not be affected by the swathe of viruses created for it, claims Microsoft. 52 viruses are capable of infecting mobile phones and some reports are suggesting the figure could even be as high as 71, according to the findings of a new study. Japanese mobile phone users - who have access to some of the latest mobile handsets and network technology - are increasingly concerned about viruses, spam and ID theft on their mobiles, according to research from McAfee Security.

McAfee is well known for anti-virus software, and has built its complete anti-virus engine into an internet gateway product that examines HTTP, FTP, SMTP and POP3 traffic for viruses. It also performs content filtering and acts as an email anti-relay. Within the content filtering mechanism anti-spam functionality is included.

Viruses and worms in the wild are at the lowest for over a year, according to anti-virus companies' monthly reports.

The problem of recovering accidentally deleted files was solved largely by the implementation of the recycle bin in Windows - allowing users simply to select 'Restore' from the right-click menu. However, there are a number of users that will, without thinking about what they are doing, automatically empty the recycle bin or even use a utility that does it for them at the end of each session. In addition to this, some viruses delete files, bypassing the safety-net of the recycle bin and of course, some malicious users will deliberately remove certain files. In response to this, O&O Software GmbH has written O&O UnErase which provides the user with a means of recovering such files.

Although F-Secure may not be the first name in anti-virus that springs to mind, its products are among the heaviest hitters in the industry. Unlike some products which depend purely on their signature lists to be updated, F-Secure also comprises multiple scanning engines and heuristic detection techniques that make it one of the first products to detect new viruses. The company has now brought its expertise to bear in email security with F-Secure Anti-Virus for Internet Mail.

The product is available for Windows (NT and 2000). A Unix version would be nice, although there is a version for Unix which sits at the firewall level. Installation presented no headaches. However because of the way the product works, disk and memory requirements are quite high. It is also better to share the scanning across more than one scanner server to keep bandwidth usage lower.

Watching computer viruses spread around the internet is helping biologists prevent invasions of non-native species in the Canadian wild. My last opinion piece (Winning the Virus War - But When? July 31, www.infosecnews.com/opinion/2002/07/31_01.htm) resulted in some (positive) responses, for which I’m grateful.

No security software Group Test would be complete without an appearance by Symantec, and this is no exception. Symantec's offering is its Norton Internet Security Suite, specifically targeted at the standalone desktop machine, or those connected to smaller networks. Because of this, it is only available for non-server versions of Windows.

Installation of the product is extremely straight­ forward, aided by the very well-written documentation; as you would expect, considerable emphasis is placed on the prevention of viruses. The product very much urges you to take responsibility for your own actions, and the manual contains a very useful guide to the risks the internet can pose - something many home users may know nothing about.

ViraLock takes a different approach to securing a users' email system from the ravages of viruses and other malware. Rather than prevent a virus infection, the software is designed to work with existing anti-virus applications and firewall systems to prevent a users' mailbox from being compromised by an executable of any type.

Viruses and worms could find new targets this year, including embedded computers in cars and satellite communication systems, according to IBM. Mobile phone viruses will become rife within two years, according to an industry expert. Fuelled by a plague of viruses and spam, security software spending rose by over a quarter to $52.59 million in the Gulf States in 2003 and is expected to rise 27 per cent during 2004, recent analysis of the Middle Eastern security market has revealed. Danish telecommunications company TDC has successfully completed deployment of a security system at its network edge designed to protect subscribers from spam, viruses and other malicious attacks.