Earlier this year, US-CERT has deemed it important to release an alert about publicly accessible open recursive DNS servers that are increasingly being used in DNS amplification attacks – a very effec…
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C&C PHP script for staging DDoS attacks sold on underground forums
There are several dates throughout the year that are notorious for wreaking havoc on businesses via DDoS attacks, data breaches and even malware or botnet assaults. According to Radware, there ar…
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Timing is an influential risk-factor for cyber attacks
When Project Tor director Roger Dingledine recently drew the public's attention to the unusual and considerable rise in the number of Tor users, he invited people to speculate and share plausible expl…
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Massive spike of Tor users caused by Mevade botnet
Denial of Service (DoS) attacks continue to be on the rise, which is no surprise given our ever-growing dependency on Web-based services, coupled with the fact that these attacks are relatively cheap …
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Understanding and defending against Denial of Service attacks
When first unearthed three months ago, the Obad Android Trojan has fascinated researchers with its sophistication. Difficult to analyze, using a bug in the Android OS to extend Device Administrato…
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Obad Android Trojan distributed via mobile botnets
Prolexic shared attack signatures and details that are helpful to detect and stop DDoS attacks from the Drive DDoS toolkit, an attack tool often used as a source of distraction while criminals break i…
Kelihos is a botnet which utilizes P2P communication to maintain its CnC Network. With all of the attention around Kelihos, it should be no surprise that 30/45 AV vendors are detecting the latest inst…
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Kelihos botnet: What victims can expect
The China Internet Network Information Center (CNNIC), which maintains the registry for the .cn, China's country code top-level domain, has notified the public that two massive DDoS attacks have been …
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Largest DDoS attack ever disrupts China's Internet
Unbeknownst to its users and perhaps even to its developers, the popular Windows download manager Orbit Downloader has been outfitted with a DDoS component. The Orbit Downloader has been around s…
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Popular Windows downloader has secret DDoS capability
A while ago a group of researchers has analyzed and tested the resilience of P2P botnets, and has discovered that while Zeus and Sality botnets are highly resilient to sinkholing attacks, Kelihos and …