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| Jul 1, 2024 | Пробы на роль Архитектора: вступление | Я тут наткнулся на старую почту с приглашением на собеседование. С пожелтевшими гифками в подписи и просроченным сургучом сертификатов. Дело давнее, пандемийное, так что, думаю, можно рассказать. Я один не смотрю на сроки NDA, когда подписы... |
| Apr 16, 2024 | Разбираем на винтики учебный процессор TOY | Архитектура
TOY - это минималистичный воображаемый процессор (хотя были попытки его воплощения в реальность). Его описал профессор Phil Koopman в своей статье Microcoded Versus Hard-wired Control ещё в 1987 году. TOY изучают на парах по Com... |
| Apr 12, 2024 | Кибератаки уровня «космос»: зачем хакеры взламывают спутники и к чему это приводит | Есть ли в космосе место для хакеров? Увы, где человек что-то сотворил, найдутся и те, кто захочет созданное разрушить или обратить себе на пользу. Единственного в истории подозреваемого в хакерстве на орбите — астронавта Энн Маклейн — суд о... |
| Oct 26, 2023 | CRC — это просто (деление столбиком) | Введение
Целостность - это важное свойство системы.
Будет плохо, если пользовательские данные будут искажены, а мы и глазом не моргнем.
Существуют различные способы достижения этого. Как например, коды коррекции или обнаружения ошибок.
Собс... |
| Oct 19, 2023 | There’s a new way to flip bits in DRAM, and it works against the latest defenses | Enlarge reader comments 64 with
In 2015, researchers reported a surprising discovery that stoked industry-wide security concerns—an attack called RowHammer that could corrupt, modify, or steal sensitive data when a simple user-level applica... |
| Aug 18, 2023 | Возвращение блудного молотка | Почти десять лет назад были описаны атаки, эксплуатирующие непреднамеренный и нежелательный побочный эффект динамической памяти с произвольным доступом (DRAM), так называемый rowhammer. За это время неоднократно появлялись новые эксплойты д... |
| Jun 9, 2022 | Реализация кэш-компрессии по алгоритму base+delta | Введение
Существенную часть кристалла современных ЦП занимает кэш-память. Дальнейшее увеличение кэш-памяти без изменения технологических норм приведет к соответствующему увеличению кристалла. Одним из способов увеличения объема хранимой инф... |
| Nov 22, 2021 | Security Week 47: обновленная атака Rowhammer на модули памяти DDR4 | На прошлой неделе исследователи из Высшей технической школы в Швейцарии (ETH Zurich) опубликовали работу (пост в блоге команды, сама работа, исходники на GitHub), описывающую новый метод атаки типа Rowhammer на модули памяти стандарта DDR4.... |
| Sep 24, 2021 | Email And The Evolution Of Technology Standards | Lila Kee is the General Manager for GlobalSign’s North and South American operations, as well as the company's Chief Product Officer. |
| Apr 7, 2021 | Miners, Front-Running-as-a-Service Is Theft | We’d like to announce a great new idea we’ve devised to reform the police.
Today, cities direct their police forces to prevent and prosecute theft. But crime is a tough problem, and policing is costly. What cities should do instead is aucti... |
| Jan 24, 2020 | Your PGP Key? Make Sure It's Up to Date | Identity thieves now have another tool at their disposal: bitcoin hashing power.
That’s the conclusion from a new cryptanalysis paper published earlier this month on SHA-1 (pronounced “shaw”), a once-popular hash function created by the Nat... |
| Sep 10, 2019 | Weakness in Intel chips lets researchers steal encrypted SSH keystrokes | Enlarge
Intel reader comments 85 with 70 posters participating, including story author
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In late 2011, Intel introduced a performance enhancement to its line of server proces... |
| Oct 23, 2016 | Using Rowhammer bitflips to root Android phones is now a thing | Enlarge / An LG Nexus 5 at the moment it is rooted using Rowhammer-induced bit flips.
van der Veen et al. reader comments 157 with 90 posters participating
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Researchers have... |
| Aug 31, 2016 | New cloud attack takes full control of virtual machines with little effort | Enlarge reader comments 98 with 50 posters participating, including story author
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The world has seen the most unsettling attack yet resulting from the so-called Rowhammer ex... |
| May 28, 2016 | One chip to rule them all? The Internet of Things and the next great era of hardware | Narbeh Derhacobian Contributor
Narbeh Derhacobian is the co-founder and CEO of Adesto Technologies, which provides application-specific, ultra-low-power non-volatile memory products.
It’s been almost 10 years since Apple unveiled the iPhone... |
| Sep 16, 2015 | 'Dissent,' a New Type of Security Tool, Could Markedly Improve Online Anonymity | Researchers at the Dissent Project are building a new kind of anonymity tool that, when used in conjunction with the Tor anonymity network, could significantly improve online anonymity.
Unlike Tor's onion routing architecture, which routes ... |
| Jul 24, 2015 | Researchers claim they’ve developed a better, faster Tor | HORNET, a proposed anonymizing network architecture based on an "onion routing" approach similar to Tor, could be much faster and integrated directly into Internet infrastructure, say its authors.
James Niland reader comments 170 ... |
| Mar 10, 2015 | Cutting-edge hack gives super user status by exploiting DRAM weakness | Enlarge / DDR3 DIMMs like this one are susceptible to a hack known as "rowhammering," which alters the contents stored in computer memory.
Tobias b köhler reader comments 146 with 88 posters participating, including story author
S... |
| Oct 21, 2014 | Have Drone Will Travel: Slow-Moving Regulators Force Innovation Overseas | Drones are leaving the U.S. for greener pastures, according to several media outlets (e.g., WSJ and Bloomberg). In response to slow-moving U.S. domestic policy on commercial drone use, innovators are moving abroad, to jurisdictions where re... |
| Jun 28, 2013 | Password complexity rules more annoying, less effective than lengthy ones | reader comments 86 with 58 posters participating
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Few Internet frustrations are so familiar as the password restriction. After creating a few (dozen) logins for all our Web ... |
| Dec 14, 2012 | How to bring down mission-critical GPS networks with $2,500 | Enlarge / The phase-coherent signal synthesizer with its top cover removed. The $2,500 device can be used to severely disrupt mission-critical GPS equipment used by the military and private industry.
Nighswander et al. reader comments 69 wi... |
| Dec 10, 2012 | Whitehat Researchers Have Uncovered Serious GPS Vulnerabilities | Current smartphone map debacles aside, the world's logistics are more efficient than ever thanks to GPS. But on the flip side, that means the world's economy is now particularly reliant on the satellite network, and new research suggests th... |
| Oct 16, 2012 | Zero-day attacks are meaner, more rampant than we ever thought | Lifecycle of zero-day vulnerabilities.
Symantec reader comments 25 with 19 posters participating
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Computer attacks that target undisclosed vulnerabilities are more common an... |
| 7 ways to protect your iPhone from being hacked | Redeem now
Your iPhone can be hacked, though it isn't very common, and iPhones are safer than Androids. To protect your iPhone, don't click on suspicious links or give out your personal information. If your iPhone has been hacked, you might... |