Tag Archive | "denial-of-service"


09 December 2010 | 10,870 views

WikiLeaks Attacks Cause Rival DDoS Retaliation

The biggest news by far for the past week or so has been the attacks on WikiLeaks infrastructure after posting tens of thousands of classified cables online in a categorized form. Just a few days ago their DNS provider (EveryDNS) pulled the plug – apparently due to pressure from the US government, and also because [...]

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11 November 2010 | 10,741 views

ddosim v0.2 – Application Layer DDOS Simulator

DDOSIM simulates several zombie hosts (having random IP addresses) which create full TCP connections to the target server. After completing the connection, DDOSIM starts the conversation with the listening application (e.g. HTTP server). Can be used only in a laboratory environment to test the capacity of the target server to handle application specific DDOS attacks. [...]

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07 May 2010 | 8,279 views

Jarlsberg – Learn Web Application Exploits and Defenses

This codelab is built around Jarlsberg /yärlz’·bərg/, a small, cheesy web application that allows its users to publish snippets of text and store assorted files. “Unfortunately,” Jarlsberg has multiple security bugs ranging from cross-site scripting and cross-site request forgery, to information disclosure, denial of service, and remote code execution. The goal of this codelab is [...]

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20 April 2010 | 5,476 views

China Reports Millions Of Conficker Infections

Conficker has been giving us all headaches for quite some time now, the latest news it that China hosts up to 28% of the World Conficker infections at its peak. 7 million separate hosts infected with Conficker at the end of 2009, that’s more than the population of some countries! It’s a pretty nasty piece [...]

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09 September 2009 | 13,579 views

Cisco & Microsoft Patch TCP Stack DoS Exploit

A fairly serious flaw that was announced in October 2008 by Outpost24 (and apparently discovered way back in 2005), has finally been patched by the major players Cisco and Microsoft. So far Redhat has offered a workaround for the flaw and Juniper has responded that their equipment is not vulnerable. It could be that Juniper [...]

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22 May 2009 | 7,377 views

DNS DDoS Attack Takes Down China Internet

The latest news is a few million Chinese Internet users had trouble accessing any websites yesterday due to a DDoS attack on the DNS system from one of the countries registrars. It just shows that China has an inherently weak infrastructure if such a large portion of people can be disrupted with an attack to [...]

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29 January 2009 | 7,326 views

Kyrgyzstan Taken Offline by Huge Denial of Service Attack

Isn’t it amazing in this day and age an entire country can be knocked offline by Denial of Service attacks! You’d have though it wouldn’t happen any more. I do remember the days when it was fairly easy to take one of the smaller ISPs out in UK, so I guess the infrastructure of some [...]

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26 July 2007 | 7,659 views

TimeWarner DNS Hijacking IRC Servers to Stop DDoS Attacks

An interesting happening this week, some ISP’s have been jacking the DNS entries for certain IRC networks to crack down on zombie/bot infections. Is it ethical? Should they be doing this to their users? I first got wind of this from a post on Full Disclosure mailing list from an IRC network administrator. You can [...]

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26 March 2007 | 9,608 views

Hackers Attack Root Servers and Slow Internet Key Traffic

Well at least it shows the Internet is not very susceptible to such attacks due to its distributed nature, even if the root nameservers are down, the DNS system still functions. This was a pretty heavy attack though and the most significant in the past 5 years or so, someone testing their ego I guess. [...]

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03 February 2007 | 5,971 views

Cafepress.com Under Heavy DDoS Attack

Towards the end of last year Cafepress.com came under heavy DDoS attack (Distributed Denial of Service) which took it down for some time. The problem with DDoS attacks is there’s not much you can do to prevent it, if that guy has enough zombies resulting in enough bandwidth, you are going down. DDoS attacks have [...]

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