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Mapping Mirai: A Botnet Case Study

Mirai is a piece of malware designed to hijack busybox systems (commonly used on IoT devices) in order to perform DDoS attacks, it’s also the bot used in the 620 Gbps DDoS attack on Brian Kreb’s blog and the 1.1 Tbps attack on OVH a few days later. Although Mirai isn’t even close to …

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DDoSing with Other People’s Botnets

While I was reverse engineering ZeroAccess in order to write a monitoring system, I had an idea which would allow me to use ZeroAccess C&C infrastructure to reflect and amplify a UDP based DDoS attack, which I’d found to be beautifully ironic. After further analysis, I discovered it may even …

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Distributed Denial Of Service (DDoS) for Beginners

Distributed Denial Of Service, or DDoS, is an attack in which multiple devices send data to a target device (usually a server), with the hope of rendering the network connection or a system application unusable. There are many forms of DDoS attack, but almost all modern attacks are either at …