While these side-channel exploits are possible over modern internet connections, “network jitter” has forced adversaries to collect thousands or millions of measurements to infer just a single bit of information. Timing attacks, which infer secrets by measuring the execution time of cryptographic algorithms, have led to vulnerabilities surfacing in applications and cryptosystems that lack constant-time execution. In a separate presentation last week, Vanhoef and Van Goethem elevated timing attacks to fresh heights, after surmounting a challenge that previously complicated remote assaults. The gradual adoption of ‘ operating channel validation’ (PDF) and ‘ beacon protection’ (PDF) will eventually offer a degree of protection from FragAttacks, he said. Pulling the pin on FragAttacksĪt Black Hat, security researcher Mathy Vanhoef shared his impressive work on FragAttacks fragmentation and aggregation attacks) and – with the help of Tom Van Goethem – timing attacks.įor the former, he described how implementation flaws and design vulnerabilities in WiFi’s frame aggregation and fragmentation features affect all protected WiFi networks, and even the WEP protocol dating back to 1997.Ĭertain implementation bugs were particularly widespread and trivial to exploit, he warned. The work shows that domain validation, though it enjoys advantages because it is low cost and lends itself to automation, is not yet secure and needs to be refined in order to become more effective as a barrier to fraud. Still catching up on the proceedings? Look no further: Attacking Let’s EncryptĪt Black Hat, researchers from the Fraunhofer Institute for Secure Information Technology showed how the security controls introduced with Let’s Encrypt’s multi-perspective validation feature might be abused.Ĭircumventing these controls, which were introduced in February 2020 in response to earlier attacks, makes it possible for attackers to get digital certificates for web domains they do now own, offering a springboard for phishing attacks or other scams.īy introducing packet loss or latency to connections to some of the nameservers, an attacker could force the system to rely on a nameserver of their choice – downgrading the security offered by multiperspective validation. Security researchers made up for the lack of audience interaction by showing that – like the athletes competing at this month’s Olympics and Paralympics – they could go faster, higher, and stronger together. Hacker Summer Camp 2021 adopted a hybrid format this year, as the restrictions imposed by the ongoing coronavirus epidemic meant that the majority of participants to Black Hat and DEF CON tuned in online rather than turning up in Las Vegas.ĬATCH UP Black Hat 2021: Zero-days, ransoms, supply chains, oh my! Through both natural curiosity and fascination turned obsession, DEFCON has perfected their craft in media modifications, establishing their repute as a standalone brand.Tools, techniques, and (hybrid) procedures Durable reverse lug outsole and knurled texture foxing tapeĭEFCON has evolved into a multifaceted study group responsible for the marketing and development of some of the leading brands in the tactical and streetwear worlds.Vans Ultracush HD footbeds w/ custom artwork.Military detailing from DEFCON identity to BDU specs. Dri-Lex™ moisture management linings throughout.Premium Waterproof and Flame Retardant Wolverine Pig Suede®.As an ode to past projects, the Vans DEFCON Multicam® capsule comes full circle, completing the footwear outfit with new apparel fabrics originally developed for the US Army and tactical law enforcement. Vans reunites with the stealth collective this spring to resurrect the Vans Sk8-Hi Notchback Pro, engineered with three new Multicam® patterns, Arid™, Tropic™, and Black™, specifically designed to reduce the visual and near-Infrared signature of a person in three distinct environments. While DEFCON origins remain classified, the projects stamped with their namesake speak volumes. Here’s some VERY VERY cool news: VANS AND DEFCON RESURRECT THE SK8-HI NOTCHBACK PRO A fundamental part of intelligent behavior is planning. Planning is thinking about a goal and then organizing the activities to achieve the goal. With a plan, you can see how much you have progressed towards your goal and how far on your map to the next destination.
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