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Consequently, your company will lose all the business it might have had that day as customers are unable to access your Web site. For instance, a spiteful former employee may launch a Dos attack on your biggest selling day of the year. In this instance, your enemy might launch a Denial-of-Service attack (DoS) which is an attack designed to make the hosted pages of a website or network become unavailable to customers or employees. Whatever the actual figure, creating click fraud zombies is currently a multi-million dollar industry, so do not expect it to stop soon.ĭoS attacks:- Your company may have malicious competitors, or spiteful former employees who will stoop to any level to bring your company down.

While Google said in Dec 2006 that click fraud for their AdSense contextual ad network is less than 2 percent, some advertisers have much higher estimates. Using a hidden program, zombie computers emulate human clicking on ads at a website or weblog. This classic form of 'Zombie' computers is still the most common. Currently, 'zombies' are used to send out the following types of malware:Spamming and phishing attacks. Unfortunately for network managers and business owners, the 'zombie' malware threat is expected to continue to grow both in number and variety over the next few years. These 'botnets' then send out spam that may include phishing attempts, viruses and worms. Infected 'zombie' computers, are organized by spammers into small groups called 'botnets'. A 'zombie' computer is simply a computer infected with malware that causes it to act as a tool of a spammer by silently sending out thousands of emails from the owner's email address. A recent New York Times article estimates that as much as 80 percent of spam messages are sent out by the computers of ordinary individuals who have no idea their computers have been converted into 'zombies'. If you've ever wondered who is sitting around sending out all those spam emails, the answer may be you.