Posts Tagged ‘#denialofservice’

Denial of Service (DoS) attacks

News, Warnings | Posted by Dennis August 17th, 2011

Denial of Service AttacksIn a previous post I described BotNets and zombie PC’s, and a customer asked me ‘Why would they do this?’.  The main reason is to have a virtual ARMY of computers, spread across the globe, to do your bidding.   This way, if the person(s) responsible wants to take down a web site, they can.  They flood the site in question with so many requests at the same time that the site goes down (or at least slows to a crawl).  It’s difficult to stop because the traffic is coming from so many different places.  There are many types of DoS attack, this one is called Distributed, or DDoS.  One of the most worrisome examples of this type was the July 2009 cyber attack on the US and South Korea, allegedly spawned by China and North Korea.  You can read the details here.  IT and network professionals are always watching, tweaking, and learning to prevent these types of vulnerabilities.  It’s a constant battle between the good guys and the bad guys.