Tag: computers

Hackers devise method to take over wireless keyboards/mouses

9:21 am

Your modern wireless computer is not safe: Hackers have devised an attack that is capable of not only recording the keystrokes and mouse actions of wireless devices, it can also take over the computer, and it can do it from hundreds of feet away.

On Tuesday Bastille’s research team revealed a new set of wireless keyboard attacks they’re calling Keysniffer. The technique, which they’re planning to detail at the Defcon hacker conference in two weeks, allows any hacker with a $12 radio device to intercept the connection between any of eight wireless keyboards and a computer from 250 feet away. What’s more, it gives the hacker the ability to both type keystrokes on the victim machine and silently record the target’s typing.

The keyboards’ vulnerability, according to Bastille’s chief research officer Ivan O’Sullivan, comes from the fact that they all transmit keystrokes entirely without encryption. The manufacturers’ only plan against attackers spoofing or eavesdropping on their devices’ communications is to depend on the obscurity of the radio protocols used. “We were stunned,” says O’Sullivan. “We had no expectation that in 2016 these companies would be selling keyboards with no encryption.”

In other words, if you use a wireless keyboard or mouse, your system is very vulnerable and exposed.

I find this story amusing in a sense, since my friends constantly make fun of me for not upgrading to these devises. I however see no reason to spend money on a new keyboard when the old wired one I have works fine. Now I have good reason, when I do upgrade, to avoid the wireless route.

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Getting and Installing Linux – Part 5

6:01 am

Running Windows programs on Linux:

An overview of WINE and Virtual Machine

by James Stephens

In addition to all the software available for Linux, Linux also possesses the ability to run Windows software using either WINE or in a virtual machine. This can be valuable in many ways, from running legacy software to running Windows and Linux on the same machine at the same time.

WINE is the open source implementation of CrossOver, which Apple users may already be familiar. It is essentially a translator: WINE sits between a Windows application and the Linux system, presenting what appears to be a Windows system to an application and generating Linux instructions for processing. It’s not a perfect solution, but it’s pretty good. It’s fast and efficient, requiring little more resources then the application itself, making it suitable for older machines. When properly configured, Windows applications install as if in Windows and run on Linux like any other application. The backward compatibility of WINE is actually better then that of Windows itself. So if you have beloved but outdated software you can run it again with WINE. In my case that is a Windows 3.1 controlled audio mixing console. A lot of people like to play the old Windows 95 games. For more information including a list of compatible Windows software and performance assessments go to www.winehq.org
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Getting and Installing Linux – Part 4

6:01 am

The Software Manager

by James Stephens

A computer is nothing more than a toy unless it has the tools you need to get your work done, and Linux has a great set of tools. Most distributions come loaded with the tools most people use every day, a full office suite, graphics and media packages and so on. If you want more, a world of software awaits at your fingertips via the Software Manager. Think of it as the app store for your distribution, with tens of thousands of official titles vetted and available for download, most free of charge. No longer are you left to the wilds of the Internet to find what you need.

Most Linux Software is functionally equivalent to that of Apple or Windows. Most open source titles are ported to all platforms including Linux. So if you use an open source title such as Audacity or VLC media player, just type its name into the Linux Software Manager search bar and you will find it. For propitiatory titles such as Photoshop just define what it does, image manipulation for example, and the Software Manager will suggest Linux equivalents like GIMP or KRITA. In addition Photoshop and some other Windows software run great on Linux using WINE – the Windows compatibility layer. More about that later.
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Getting and Installing Linux – Part 3

6:01 am

UEFI and booting Linux on Win 8.1 & 10 machines

by James Stephens

Unified Extensible Firmware Interface (UEFI) is intended to be a modern alternative to BIOS. Ideally UEFI-(Secure Boot) blocks malware from being loaded when the computer is booted by using digital keys which software must possess in order to be booted onto the computer. UEFI supplants the traditional BIOS and it’s post screen, appreciably shortening boot times but sometimes adding a few more steps to set up a computer to boot into Linux. If necessary UEFI-(Secure Boot) may be disabled to allow access to the BIOS and the booting of non-UEFI complaint operating systems, such as 32 bit Linux or legacy Windows, and set up the computer to boot into Linux as I described in the previous post. But I recommend using UEFI if at all possible.
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Microsoft gives people another reason to dump Windows

9:14 am

Why I use Linux: In its effort to convince users of earlier versions of Windows to upgrade to Windows 10, Microsoft is now inserting a full screen pop-up upgrade notification, often at decidedly unwanted moments.

The Redmond software giant confirmed today it will start showing dark blue screens urging people to install the latest version of Windows. The full-screen ads will pop up on Windows 7 and 8.1 desktops from now until July 30, when the free upgrade period ends.

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Getting and Installing Linux – Part 2

6:01 am

Obtaining and installing a Linux Distribution

by James Stephens

Almost any Linux distribution runs great on today’s hardware. But I’m writing this with aging computers in mind. With older computers it’s a good idea to know how much RAM (often referred to as physical memory) you have in order to select a distribution that will work well with your machine.

With Windows this can be shown by opening “System” in “Control Panel.” RAM or physical memory will be expressed in Mb or Gb. Once you know this, you are armed with the knowledge to select a distribution.

For machines with 512 Mb RAM and up I recommend a distribution from LinuxMint. For machines with under 512 Mb RAM I recommend Bodhi Linux 32 bit legacy.

Operating systems come in 32 bit and 64 bit versions. With the exception of replacing Windows 8.1 and 10, a 32 bit distribution will work on any computer. (More about Microsoft and UEFI later.) At one time a 64 bit opening system allowed the use of more memory then it’s 32 bit kin. But with modern 32 bit distributions this is no longer an issue. So if you want to play it safe choose a 32 bit distribution.

LinuxMint offers a choice of desktops and the website does a good job explaining the advantages of each. I would recommend LinuxMint 17.3 MATE 32 bit edition as most likely to work on any computer. But take a look at each of them and see which one you like. As long as you follow the minimum RAM requirements guidelines as listed in the description you will be okay.
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Getting and Installing Linux

6:01 am

After seeing the response to a number of my posts on the advantages of Linux (or anything) over Windows, one of my readers, James Stephens, offered to write a series of posts for Behind the Black, describing step-by-step the process by which one gets and installs Linux on a desktop or laptop computer. James is like almost every other user of Linux, self-taught and unafraid to play with the software. As he emailed me, “Over my long career I’ve had my hands in everything from vacuum tube televisions to sophisticated aerospace systems some of which are orbit today. I have designed and built recording studios, radio and television studios and serviced the equipment as well as the transmitters. But I must say I really enjoyed repairing televisions the most. I loved every aspect of the business and really enjoyed doing business with my customers.” At the present time James makes his living maintaining what he calls “a fleet of computers, Windows, Mac, and Linux.”

So, today we begin this series. If all goes as planned, James will be sending these to me on a weekly basis, whereby I will post them each Saturday. So, get one of your old unused computers out of the garage now and get ready to make it useful again, while simultaneously freeing yourself from Microsoft!

An Introduction

By James Stephens

Your phone your TV, most of the devices you use everyday use Linux. So too most of the world’s web sites including this one. So why not your PC? The purpose of this series, which we hope to post on a weekly basis every Saturday, is to at least in a general way acquaint you with desktop Linux and some of its advantages. More importantly, we hope to assist you with representative instructions for the installation and use of this most excellent computer operating system.

But first a few words of explanation.
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Beware new javascript ransomware

8:44 pm

A new ransomware attack, designed to kidnap your computer and demand money from you before releasing it, has been written entirely in javascript and is thus more dangerous because many email programs, like Gmail, will not block the running of the .js file.

The bottom like is always the same: Don’t run attachments sent to you unexpectedly, even from friends. Check with them to confirm that they meant to send it, and if they don’t confirm, delete it.

I could also label this story as another reason I don’t use gmail, but that really is a different story entirely.

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Why I won’t use Windows

9:05 am

A remote wildlife project in central Africa has been significantly hampered by the unwanted Windows 10 forced upgrades.

The Chinko Project manages roughly 17,600 square kilometres (6,795 square miles) of rainforest and savannah in the east of the CAR, near the border with South Sudan. Money is tight, and so is internet bandwidth. So the staff was more than a little displeased when one of the donated laptops the team uses began upgrading to Windows 10 automatically, pulling in gigabytes of data over a radio link.

And it’s not just bandwidth bills they have to worry about. “If a forced upgrade happened and crashed our PCs while in the middle of coordinating rangers under fire from armed militarized poachers, blood could literally be on Microsoft’s hands,” said one member of the team. “I just came here recently to act as their pilot but have IT skills as well. The guy who set these PCs up didn’t know how to prevent it, or set a metered connection. I am completely livid.”

As I’ve noted before, I have been using Linux for ten years. Though there have been some areas of annoyance (no software is perfect), I have not found myself limited in what I need to do, in any important matter. If you’ve got a spare older computer that you’re not using right now, install Linux on it and play with it. You will soon find that it does everything a Windows machine does, without the crap.

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Why I use Linux

2:27 pm

Linux can be a pain sometimes, and it requires a bit more hands-on work by the user to make it function, but overall in the ten years since I abandoned Windows and switched to Linux (first with the Debian operating system and now with Kubuntu) I have found my work on my computer to be far more satisfying and successful. I can mostly get things done the way I like to do them, not as dictated by some software geek working at Microsoft’s headquarters.

Which is why this story interested me: “I thought my daughter clicked on ransomware – it was the damn Windows 10 installer.” It describes a number of stories where Windows 10 took control of a person’s computer and imposed an upgrade, against their will.

This story, among many others, only confirmed for me that my decision in 2006 was a wise one. I will never return to Windows, and if I was certain that computer projectors could read Linux laptops I’d switch the laptop to Linux as well.

It is just a shame however that so many people still stick with Windows, as it often makes doing their work difficult, if not impossible. When a product doesn’t work for you, you find another product. That’s how freedom and competition work.

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What next for the computer Go program?

9:07 am

Link here.

The software uses neural networks to learn from experience. For example, to train for its Go match the computer program studied 30 million Go board positions from human games, then played itself again and again to improve its skills.

DeepMind’s founder and chief executive Demis Hassabis mentioned the possibility of training a version of AlphaGo using self-play alone, omitting the knowledge from human-expert games, at a conference last month. The firm created a program that learned to play less complex arcade games in this manner in 2015. Without a head start, AlphaGo would probably take much longer to learn, says Bengio — and might never beat the best human. But it’s an important step, he says, because humans learn with such little guidance.

DeepMind, based in London, also plans to venture beyond games. In February the company founded DeepMind Health and launched a collaboration with the UK National Health Service: its algorithms could eventually be applied to clinical data to improve diagnoses or treatment plans. Such applications pose different challenges from games, says Oren Etzioni, chief executive of the non-profit Allen Institute for Artificial Intelligence in Seattle, Washington. “The universal thing about games is that you can collect an arbitrary amount of data,” he says — and that the program is constantly getting feedback on what’s a good or bad move by playing many games. But, in the messy real world, data — on rare diseases, say — might be scarcer, and even with common diseases, labelling the consequences of a decision as ‘good’ or ‘bad’ may not be straightforward.

Hassabis has said that DeepMind’s algorithms could give smartphone personal assistants a deeper understanding of users’ requests. And AI researchers see parallels between human dialogue and games: “Each person is making a play, and we have a sequence of turns, and each of us has an objective,” says Bengio. But they also caution that language and human interaction involve a lot more uncertainty.

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It’s a sweep!

8:44 am

Google’s AlphaGo computer program today completed a three game sweep of Go professional champion Lee Sedol.

This might be the best quote from the article:

The algorithm seems to be holding back its power. Sometimes it plays moves that lose material because it is seeking simply to maximise its probability of reaching winning positions, rather than — as human players tend to do — maximise territorial gains. Jackson thinks that some of these odd-looking moves may have fooled Lee into underestimating the machine’s skills at the beginning of game 1 — which, I suppose, makes AlphaGo a kind of computerized hustler.

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Computer program learns and then wins at Go

9:35 am

A computer program, dubbed AlphaGo, has successfully beaten a professional player of Go for the first time.

What is significant however is the method used by that computer program to win:

The IBM chess computer Deep Blue, which famously beat grandmaster Garry Kasparov in 1997, was explicitly programmed to win at the game. But AlphaGo was not preprogrammed to play Go: rather, it learned using a general-purpose algorithm that allowed it to interpret the game’s patterns, in a similar way to how a DeepMind program learned to play 49 different arcade games2.

This means that similar techniques could be applied to other AI domains that require recognition of complex patterns, long-term planning and decision-making, says Hassabis. “A lot of the things we’re trying to do in the world come under that rubric.” Examples are using medical images to make diagnoses or treatment plans, and improving climate-change models.

If computer programs are now successfully able to learn and adapt it means that it will become increasingly difficult to distinguish between those programs and actual humans.

1 comment

Hackers demonstrate they can remotely take over moving vehicle

9:33 am

Does this make you feel safer? In a demonstration of the vulnerability of modern cars that are linked to the internet, two hackers took over the operation of an unmodified moving Jeep Cherokee.

A pair of Missouri-based hackers have put on an extraordinary demonstration by logging into a Jeep Cherokee remotely, while it was being driven by a Wired reporter Andy Greenberg, and systematically taking over the car’s functionality. First, they hit him with cold air through the air-con system, then they blasted Kanye West through the stereo at full volume, rendering the volume knob completely useless. They flashed up a picture of themselves on the car’s console and set the windscreen wipers going full blast, squirting cleaning fluid onto the windscreen and making it difficult to see.

But these were just warmups to the main event – next, they took over the engine and shut it off completely, leaving the driver powerless and coasting on the freeway as traffic flashed past around him. Then, once he was off the highway, they showed how they could completely disable the brakes, and take over the steering of the car – only at slow speeds and in reverse, but they’re working on unlocking new abilities every day.

This suggests to me that linking any car directly to the internet is probably a very bad idea.

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