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Members blog at WebmaisterPro. Covering topics related to online marketing, SEO, web development as well as software reviews.

Security Challenges with Denial of Service Attacks

Denial of Service (DoS) and Distributed Denial of Service (DDoS) attacks have featured heavily in the tech news of recent years as their ease of delivery makes them a simple tool for those wishing to disrupt a target's online presence. A DoS is initiated when one computer continually sends data, typically as requests, to another computer with the aim of exceeding the target machines resources such as bandwidth, RAM or processing power. A DDoS is when multiple computers join forces, typically controlled by a Botnet, and target an organisations web servers or network. The disruption from a DDoS, however, can affect different organisations in different ways. Some organisations such as banks have seen DDoS attacks prevent their customers from accessing their online banking services. This has obvious implications for consumers and businesses looking to manage their accounts. HSBC suffered a DDoS attack in October 2012 that was attributed to Izz ad-Din al-Qassam Cyber Fighters allegedly as a protest aimed at forcing You Tube to remove the controversial film Innocence of Muslims. The same group has continued its DDoS attacks into January of 2013 against a long list of U.S. banks such as JP Morgan Chase, U.S. Bancorp and Bank of...
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Malicious Intrusions Web Hosts Have to Deal With

Websites are under attack. In fact, according to what's reported, it seems like these attacks are happening now on a daily basis. And when it comes to who is behind them, perpetrators range from political activists looking to make a statement, to enterprising criminals hunting for soft targets and spammers after a quick buck. So what form can these attacks take? And what can be done by web hosts to mitigate the likelihood of an attack being effective? Denial of Service The most well-known of these intrusion attempts that web hosts have to deal with is the Denial of Service attack. A DOS attack is when a flood of service requests is sent from the attacking machine to the intended victim machine in order to prevent the victim machine from responding to genuine requests from legitimate machines on the network or internet. The flood of requests causes the victim machine to exhaust its resources in replying to these fake requests. Typically memory or CPU usage or band-width is the resource that becomes exhausted on the victim machine. But DOS also has a big brother DDOS. A Distributed Denial of Service attack is when multiple compromised machines act together to generate a...
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