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Archivo del Autor: Belen De Leon

MIT researchers say memory splitting breakthrough could prevent another Meltdown or Spectre

Virtually every modern computer processor was thrown under the bus earlier this year when researchers found a fundamental design weakness in Intel, AMD and ARM chips, making it possible to steal sensitive data from the computer’s memory.

The Meltdown and Spectre vulnerabilities — which date back to 1995 — punched holes in the walls that keeps apps from accessing other parts of the system’s memory that it doesn’t have permission to read. That meant a skilled attacker could figure out where sensitive data was stored, like passwords and encryption keys. While the companies mitigated some of the flaws, they acknowledged that their long term plan would require a core redesign in how their computer processors work.

Now, a team of MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) researchers say they have found a way to prevent a similar range of flaws like Meltdown and Spectre in the future.

When an app needs to store something in memory, it asks the processor where to put it. But searching for that memory is slow, so processors use a trick known as “speculative execution” to run several sets of tasks at the same time while it finds the right memory slot. But attackers can exploit the same technique to allow an app to read parts of the memory that it shouldn’t be allowed to read.

MIT’s CSAIL says their technique would split up memory so that the data not stored in the same place — in what the team calls “secure way partitioning.”

They call it called DAWG — or “Dynamically Allocated Way Guard” — which, admittedly might sound ridiculous, but it’s meant to work as a counterpoint to Intel’s Cache Allocation Technology, or CAT. According to their work, DAWG works similarly to CAT and doesn’t require many changes to the device’s operating system — making it potentially as easy to install on an affected computer as Meltdown’s microcode fix.

According to Vladimir Kiriansky, one of the research paper’s authors, the new technique “establishes clear boundaries for where sharing should and should not happen, so that programs with sensitive information can keep that data reasonably secure.”

Not only could the technology help to protect regular computers, but also also vulnerable cloud infrastructures.

Although DAWG can’t prevent against every speculative attack, the researchers are now working to improve their technology to prevent against more — if not all attacks.

But if their technology is picked up by Intel or any other chip maker, the researchers say techniques like DAWG could “restore our confidence in public cloud infrastructure, and hardware and software co-design will help minimize performance overheads.”


Source: TechCrunch

Orange Is The New Black will end after season 7 – CNET

It’s been one hell of a ride.
Source: CNET

YC grad Oh My Green gets $20M seed investment

In its first institutional funding round, Oh My Green has raised $20 million from Initialized Capital, Powerplant Ventures, Backed VC, ZhenFund, Talis Capital and the Stanford StartX Fund to bring healthier foods to offices around the U.S.

The concierge-style startup, which completed Y Combinator’s startup accelerator in 2016, provides businesses in San Francisco, Los Angeles, Seattle, Chicago, Austin, Denver, Boston, New York City and Nashville nutritional snacks and meals. It stocks office snack pantries — a staple at tech startups — caters events, manages cafes and provides wellness programming. Its goal is to be a one-stop shop for corporate nutritional wellness. 

The San Francisco-based company was founded in 2014 by Michael Heinrich. Based off my conversation with him earlier this week, I’m guessing he wouldn’t approve of the TechCrunch snack cupboard, which includes a year-long supply of Skittles, M&Ms and Fruit by the Foot.

“I wanted to do something more meaningful in my life,” Heinrich told TechCrunch. “I had worked in really challenging environments and I found myself really enjoying the people and the problems but looking at the food we had available, a lot of it was ultra-processed and ultra-sugared.”

“When I was sugar crashing and not being productive at work, I realized I should stop complaining and actually make a difference,” he added.

Oh My Green’s tech-enabled service, which relies on machine learning to give its customers personalized recommendations for meals and snacks, has 200 customers today, including Lyft, Apple and Y Combinator. With the investment, the company will expand throughout the U.S. and eventually launch overseas.


Source: TechCrunch

How LG made its Signature wallpaper OLEDs work smarter video – CNET

Equipped with the new Alpha 9 Intelligent processor, LG’s new OLED wallpaper TVs are sharper, richer and more vivid than ever.
Source: CNET

Sean Bean is tired of dying in movies, now he's going to die in a video game – CNET

Hitman 2 just roped Sean Bean into being an assassination victim in a video game. Genius!
Source: CNET

Facebook reportedly believes spammers were behind massive hack – CNET

Security breach exposed personal information for 29 million users.
Source: CNET

A New Facebook Suit Makes ‘Pivot to Video’ Even More Myopic

A new lawsuit alleges that Facebook inflated its video viewership numbers more than previously reported, and then hid the mistake. And that has journalists steamed.
Source: Wired

MoviePass parent under investigation for allegedly misleading investors – CNET

New York Attorney General Barbara Underwood is conducting the probe under the state’s anti-fraud act.
Source: CNET

Samsung carves faster processors with new, sharper light scalpel – CNET

It’s the first manufacturer to use extreme ultraviolet — chipmaking technology promised for decades but difficult to roll out in factories.
Source: CNET

eBay sues Amazon over alleged poaching of sellers – CNET

The complaint alleges the effort has been traced to Amazon headquarters.
Source: CNET

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