2709, 2017

DeepSec 2017 Talk: Next-Gen Mirai Botnet – Balthasar Martin & Fabian Bräunlein

Sanna/ September 27, 2017/ Conference, Internet, Security

While you were living in a cave, devices took over the world and got connected to the network. This is the state of affairs we live in right now. As long as nothing happens we don’t notice anything about it. The Mirai (未来) botnet changed this all of a sudden. Consumer devices were drafted into an army of bots. Thanks to the proliferation of networked devices such as cameras, home routers, and others the botnet was very successful. The code was designed to run on embedded devices and is even online for inspection. Let’s take a look at how to improve Mirai. Badly secured embedded devices enabled the largest DDoS attack on critical networks seen to date: The Mirai attacks in 2016 were largely pegged on Internet-exposed telnet with default credentials. While such telnet

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2302, 2016

DeepSec Video: DDoS – Barbarians at the Gate(way)

René Pfeiffer/ February 23, 2016/ Conference, Internet, Stories

Unfortunately the Internet doesn’t follow the rules of economic theory. Unlimited growth is a myth best kept for feeding your unicorns. Of course, the Internet has grown, but the mathematics and physics behind network flows stay the same. If your pipe is full, then you are going nowhere. This is why Distributed Denial of Service (DDoS) attacks still work. You can counter or evade these attacks, but they can happen. We invited Dave Lewis of Akamai to DeepSec 2015 to hear his view on the current state of affairs where DDoS is concerned. For the record: DDoS is not hacking and no hacking attack. Spread your „cyber“ somewhere else.

0910, 2015

DeepSec 2015 Talk: DDoS – Barbarians at the Gate(way) – Dave Lewis

Sanna/ October 9, 2015/ Conference, Internet, Security

There really is strength in numbers. It’s true for Big Data, high performance computing, cryptography, social media, and flooding the Internet with packets. The latter has been the method of choice for activists, „cyber“ warriors and criminals alike. Network interdiction (as military minds may call it) or Distributed Denial of Service (DDoS) attacks can be hard to counter due to the many sources of the attacking devices. Full pipes are full, no matter what you do. While you can deploy reverse proxies or rely on content distribution networks, the attack still persists. Packets keep coming until the sources are shut down. Flooding someone’s network is not a sophisticated attack. It’s gets the job done, it may be complex by nature, but it is not a stealth exploit sitting in your local network without being

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