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While mobile code makes the Web much more interesting and richer for applications, it brings along with it automated ways for hackers to penetrate desktop computers and launch executable code or applications to execute embedded scripts in files. To add to increasing Web threats, a very effective method for distributing malware is to pair it up with a seemingly useful program. When executed, the malware is free to do as it pleases. This type of attack is also known as a Trojan Horse attack. There are ten crucial ways to protect against these and other Web threats
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There is a continuum of approaches, from basic to advanced, for pursuing SOA projects, allowing an organization to match its efforts to its objectives. All approaches mandate a commitment to simplicity and robustness, regardless of how basic or advanced they are. The approaches build on one another in such a manner that doing a basic project is valuable by itself but also lays the groundwork for more advanced deployments without having to replace the original investments.
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Consider an online retailer who can't conduct business if its e-commerce application, database and customer records are unavailable or a bank that can't dispense money from ATMs and you will see how key disaster recovery has become. And, these days, no industry or company is immune. High availability and effective data and disaster recovery are essential but how can an organization tackle disaster recovery and business continuity issues effectively? There are no easy answers. But, today, it's essential to put hardware and software in place -- including mirroring, clustering, load balancing and disk-based storage -- to manage an IT infrastructure effectively.
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The problem is change; the solution is change. Like firefighters setting controlled burns to combat forest fires, IT managers are addressing the demands of business change by introducing change of their own. To meet new business needs, new applications are deployed on new architectures using new technologies. To serve growing demands for service availability, IT implements network redundancy and server clusters. To improve efficiency, IT turns to server, storage and user access virtualization. To address corporate security and governance requirements, IT implements new processes and tools.
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Early-generation server load-balancing technology has proven to be an invaluable asset, especially for organizations hosting widely utilized Web applications. By operating as a virtual entry point to such applications, load balancing provides an opportunity to execute a variety of algorithms for splitting the processing load among back-end servers. In addition, periodic polling to establish the status of participating nodes can be used not only to fine-tune the load distribution but also to avoid directing traffic to servers that are actually offline. In other words, server load balancers (SLBs) are a simple yet highly effective means to scale an application environment while simultaneously ensuring its availability.
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Regardless of how they break in, once hackers have compromised a website, they employ sophisticated automated browser infiltration tools, known as "drive-by downloads". These bits of viral code attach to the browsers of unknowing visitors; a single visit to an infected site is all it takes. The malicious code that now infects the user's browser is designed to detect vulnerabilities in the user's own computer operating system and applications in order to force a download of a whole host of malware. These deadly programs can take control of a user's computer and steal sensitive information such as banking passwords, or launch spam attacks, damage hard drives, and install additional delayed-release viruses that cause damage at a later date.
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