Posts Tagged ‘DDoS (Distributed Denial of Service)’

DDoS

NTP Amplification DDoS Attack on CloudFlare

CloudFlare disclosed the information for the largest DDoS attack that exploited vulnerability in NTP protocol. The report estimates the DDoS attack to be 400 Gb/s. This is a new threat that target network time protocol on port 123 that is normally used to synchronize time servers. February 10, 2014 1298 NTP servers on different networks [...]

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operation-tunisia

From a Hacktivism against Ben Ali to a cyber war between political parties

By Haythem El MIR On January 2, 2011 around 22h, the group of activists Anonymous launched one of the most massive and severe attacks against Tunisian cyberspace, protesting against political practices that plague the freedom of Internet access and denouncing abuses related to human rights. The attack lasted ten days, affecting about fifty servers belonging [...]

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Preventing Layer 7 DDoS Attack

WikiLeaks, th3j35t3r, LOIC are words that have been well known in the last period by the infosec community. These words get me directly thinking about the Application‐level DDoS attacks on websites such as Twitter, VISA, and MasterCard. Usually the attack involves large number for HTTP/HTTPS requests to specific sections of the website that could potentially [...]

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Two New HTTP POST Attack Tools Released

During 2010 OWASP Application Security Conference at Washington, researchers demonstrated how it is possible to conduct a new form of distributed denial of service “that floods the web server with a slow HTTP traffic. Currently there is two free utility that may perform this attack d “R U Dead Yet?” and OWASP HTTP POST Tool [...]

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IRC-Based Botnets Almost Vanishing!

Botnet Number that is controlled over web servers are five times the number of botnets controlled by IRC-channels this is according to a new research conducted by Team Cymru Security experts. The IRC botnet has decreased significantly due to some limitation over controlling and sending different instruction by the command-and-control (C&C) servers. “the US is [...]

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DDoS Attack Target DNS Made Easy

DNS Made Easy have restored there online services after a distributed denial of service attacks on last Saturday. The reported size of DDoS is about 50 Gb/sec. Identity and attackers motives have not been clarified yet but specialists assume that a major hacker’s botnet has been hired to conduct this DDoS attack. On an official [...]

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Guest Blog: Defending against DDoS

There appears to be some activity in the world of DDoS Defense. DDoS (Distributed Denial of Service) attacks have taken many forms over the years. From the early Ping Floods and Smurf attacks to much more sophisticated attacks. As an example of that sophistication look at the July attacks against 39 web sites in South [...]

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