Tecnologia da Informática Márcio Francisco Dutra e Campos

Acoustical Mesh Network

12.20.2013 · Posted in Eng. Computação, Eng. Eletrônica

Mais uma ameaça: Acoustical Mesh Network.
“Scientist-developed malware covertly jumps air gaps using inaudible sound”

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A Brief History of Open-Source Code

09.18.2013 · Posted in Eng. Computação

“Ask a group of developers what their coding languages of choice are, and you’re bound to receive a wide range of answers. C. C#. Javascript. CSS. Python. Wider still would be the range of languages that developers actually use on a regular basis, whether or not it is their top pick.”

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Reversing Bits in C

07.31.2013 · Posted in Eng. Computação

“Interesting lessons can come from unexpected places! I was pleasantly surprised at how something as “simple” as reversing bits in a byte could lead me on an unexpectedly deep exploration: operation vs instruction count, memory access patterns and cache behavior, and low-level CPU instructions. It’s often very easy to make assumptions about the performance of code that we write, and I hope that this article serves as a reminder that the map is never the territory, and that the only way to understand what’s happening inside your code is by observing and measuring it.”

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Android Fragmentation Visualized

07.31.2013 · Posted in Eng. Computação

“Fragmentation is both a strength and weakness of the Android ecosystem. When comparisons are made between Android and iOS the issue of different API levels, and the vastly different devices running them, is often emphasised. In this report we examine the extent of Android fragmentation and analyse its impact on both users and developers.”

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State of the Internet

07.03.2013 · Posted in Eng. Computação

“Each quarter, Akamai publishes its “State of the Internet” report, based on data gathered across Akamai’s global server network. “State of the Internet” highlights attack traffic, connection speeds, Internet penetration, broadband adoption, and mobile usage, as well as trends seen in this data over time.”

Buffer Overflow Attack Explained

07.01.2013 · Posted in Eng. Computação

“Buffer overflow attacks have been there for a long time. It still exists today partly because of programmers carelessness while writing a code. The reason I said ‘partly’ because sometimes a well written code can be exploited with buffer overflow attacks, as it also depends upon the dedication and intelligence level of the attacker.”

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