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More and more proprietary security tools use some open-source code. What are the advantages for companies? Microsoft has warned of a vulnerability in Internet Explorer that could result in a system crash or malicious code unknowingly downloaded onto a PC. Security experts today warned that the first examples of malicious code designed to infect videogame consoles has been discovered in the wild.

PDAs are so portable as to make them susceptible to loss or theft - in a business environment the net result of this can range from inconvenience and embarrassment, right on up to serious problems with the regulatory authorities. Which is where SafeGuard PDA enters the frame. Like similar offerings from F-Secure and Pointsec, the software is designed to make a Pocket PC-based PDA as secure as electronically possible.

CyberAngel is actually one of several competing packages on the market in the U.S. and Canada that allows a central monitoring station to detect when an unauthorized access to a PC or notebook has taken place, and alerts the owner accordingly.

Entercept is an intrusion prevention system (IPS). In common with traditional host-based intrusion detection systems (HIDS), Entercept resides on the host itself, but it works at a much lower level than a normal HIDS system.

F-Secure's offering includes several components: a Policy Manager (the hub of the suite), an Anti-Virus Management Wizard and the Policy Manager Reporting Option.

The Aladdin eSafe Appliance is a hardened, Linux-based device, which can be configured as an email inspection tool (SMTP relay) and, additionally, as a full content-filtering gateway for HTTP/FTP. To obtain the full content-filtering gateway functionality you need to use Check Point Firewall-1 configured with a HTTP/FTP security server as a content vectoring protocol (CVP) client.

Macromedia announced a vulnerability in its Flash Player 7 program earlier this month, warning users that they could leave PCs open to malicious code.

Fortinet offers a range of what it calls 'anti-virus firewalls' for all markets, from the home user to the large enterprise and carrier-class service provider.

The internet saw an increase in malicious code that exposed confidential information as online criminals sought to make a profit, according to Symantec. Not-for-profit software group Mozilla has been hit by hackers downloading infected source code onto its website. Cisco Systems has issued an alert about a flaw in its Internetwork Operating System (IOS) software that could allow an attacker to launch a denial-of-service or execute remote code on Cisco devices. Swedish police have arrested a teenager in connection with the alleged theft of source code thought to belong to Cisco.

Entercept falls into the category of an intrusion prevention system (IPS). In common with traditional host-based IDS, Entercept resides on the host itself, but it works at a much lower level than a normal HIDS system.

This is a network-based IDS, supplied as an appliance. There are four versions of the NID-300 series - the difference being in the number and speed of the Ethernet interfaces. The top-of-the-range model has two 10/100Mbit and two gigabit network interfaces. One of these interfaces is always reserved for management, but the remainder can be used for monitoring. In this way, a single NID-300 can monitor load-balanced or failover WAN connections. By separating the management and monitoring interfaces, NID-300 can operate in stealth mode, as the monitoring interface does not respond to any network traffic or requests from any service on the monitored network.

While not strictly an appliance, this version of Websense is tightly integrated with all of SonicWALL's range of extremely popular firewall appliances.

A 29-year-old Connecticut hacker was jailed for two years for selling the source code of Microsoft's Windows operating system.

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.

One potential security loophole that is frequently overlooked is access to removable media. Many access control products will bar your way into the file server, log your attempts to look at the payroll database, and prevent you from using certain applications, but this is all at the system level.