This is an experiment using a green screen and OBS. Let me know what you think!
Tag: security (page 1 of 2)
As I wrote earlier this month, blockchain technology is not about trust, it’s about distrust. So we shouldn’t be surprised in such an environment that bad actors thrive.
Reporting on a blockchain-based currency (‘cryptocurrency’) hack, MIT Technology Review comment:
We shouldn’t be surprised. Blockchains are particularly attractive to thieves because fraudulent transactions can’t be reversed as they often can be in the traditional financial system. Besides that, we’ve long known that just as blockchains have unique security features, they have unique vulnerabilities. Marketing slogans and headlines that called the technology “unhackable” were dead wrong.
The more complicated something is, the more you have to trust technological wizards to verify something is true, then the more problems you’re storing up:
But the more complex a blockchain system is, the more ways there are to make mistakes while setting it up. Earlier this month, the company in charge of Zcash—a cryptocurrency that uses extremely complicated math to let users transact in private—revealed that it had secretly fixed a “subtle cryptographic flaw” accidentally baked into the protocol. An attacker could have exploited it to make unlimited counterfeit Zcash. Fortunately, no one seems to have actually done that.
It’s bad enough when people lose money through these kinds of hacks, but when we start talking about programmable blockchains (so-called ‘smart contracts’) then we’re in a whole different territory.
A smart contract is a computer program that runs on a blockchain network. It can be used to automate the movement of cryptocurrency according to prescribed rules and conditions. This has many potential uses, such as facilitating real legal contracts or complicated financial transactions. Another use—the case of interest here—is to create a voting mechanism by which all the investors in a venture capital fund can collectively decide how to allocate the money.
Human culture is dynamic and ever-changing, it’s not something we should be hard-coding. And it’s certainly not something we should be hard-coding based on the very narrow worldview of those who understand the intricacies of blockchain technology.
It’s particularly delicious that it’s the MIT Technology Review commenting on all of this, given that they’ve been the motive force behind Blockcerts, “the open standard for blockchain credentials” (that nobody actually needs).
Source: MIT Technology Review
At an estimated read time of 70 minutes, though, this article is the longest I’ve seen on Medium! It includes a bunch of advice from ‘Coach Tony’, the CEO of Coach.me, about how he uses his iPhone, and perhaps how you should too:
The iPhone could be an incredible tool, but most people use their phone as a life-shortening distraction device.
However, if you take the time to follow the steps in this article you will be more productive, more focused, and — I’m not joking at all — live longer.
Practically every iPhone setup decision has tradeoffs. I will give you optimal defaults and then trust you to make an adult decision about whether that default is right for you.
As an aside, I appreciate the way he sets up different ways to read the post, from skimming the headlines through to reading the whole thing in-depth.
However, the problem is that for a post that the author describes as a ‘very very complete’ guide to configuring your iPhone to ‘work for you, not against you’, it doesn’t go into enough depth about privacy and security for my liking. I’m kind of tired of people thinking that using a password manager and increasing your lockscreen password length is enough.
For example, Coach Tony talks about basically going all-in on Google Cloud. When people point out the privacy concerns of doing this, he basically uses the tinfoil hat defence in response:
Moving to the Google cloud does trade privacy for productivity. Google will use your data to advertise to you. However, this is a productivity article. If you wish it were a privacy article, then use Protonmail. Last, it’s not consistent that I have you turn off Apple’s ad tracking while then making yourself fully available to Google’s ad tracking. This is a tradeoff. You can turn off Apple’s tracking with zero downside, so do it. With Google, I think it’s worthwhile to use their services and then fight ads in other places. The Reader feature in Safari basically hides most Google ads that you’d see on your phone. On your computer, try an ad blocker.
It’s all very well saying that it’s a productivity article rather than a privacy article. But it’s 2018, you need to do both. Don’t recommend things to people that give them gains in one area but causes them new problems in others.
That being said, I appreciate Coach Tony’s focus on what I would call ‘notification literacy’. Perhaps read his article, ignore the bits where he suggests compromising your privacy, and follow his advice on configuring your device for a calmer existence.
Source: Better Humans
The Guardian has a list of 18 tips to ‘survive’ (i.e. be safe) in an age where everyone wants to know everything about you — so that they can package up your data and sell it to the highest bidder.
On the internet, the adage goes, nobody knows you’re a dog. That joke is only 15 years old, but seems as if it is from an entirely different era. Once upon a time the internet was associated with anonymity; today it is synonymous with surveillance. Not only do modern technology companies know full well you’re not a dog (not even an extremely precocious poodle), they know whether you own a dog and what sort of dog it is. And, based on your preferred category of canine, they can go a long way to inferring – and influencing – your political views.
Mozilla has pointed out in a recent blog post that the containers feature in Firefox can increase your privacy and prevent ‘leakage’ between tabs as you navigate the web. But there’s more to privacy and security than just that.
Here’s the Guardian’s list:
- Download all the information Google has on you.
- Try not to let your smart toaster take down the internet.
- Ensure your AirDrop settings are dick-pic-proof.
- Secure your old Yahoo account.
- 1234 is not an acceptable password.
- Check if you have been pwned.
- Be aware of personalised pricing.
- Say hi to the NSA guy spying on you via your webcam.
- Turn off notifications for anything that’s not another person speaking directly to you.
- Never put your kids on the public internet.
- Leave your phone in your pocket or face down on the table when you’re with friends.
- Sometimes it’s worth just wiping everything and starting over.
- An Echo is fine, but don’t put a camera in your bedroom.
- Have as many social-media-free days in the week as you have alcohol-free days.
- Retrain your brain to focus.
- Don’t let the algorithms pick what you do.
- Do what you want with your data, but guard your friends’ info with your life.
- Finally, remember your privacy is worth protecting.
A bit of a random list in places, but useful all the same.
Source: The Guardian
I stumbled across this conference presentation from back in January by Jeffrey Monro, “a doctoral student in English at the University of Maryland, College Park, where [he studies] the textual and material histories of media technologies”.
It’s a short, but very interesting one, taking a step back from the current state of play to ask what we’re actually doing as a society.
Over the past year, in an unsurprising response to a host of new geopolitical realities, we’ve seen a cottage industry of security recommendations pop up in venues as varied as The New York Times, Vice, and even Teen Vogue. Together, these recommendations form a standard suite of answers to some of the most messy questions of our digital lives. “How do I stop advertisers from surveilling me?” “How do I protect my internet history from the highest bidder?” And “how do I protect my privacy in the face of an invasive or authoritarian government?”
It’s all very well having a plethora of guides to secure ourselves against digital adversaries, but this isn’t something that we need to really think about in a physical setting within the developed world. When I pop down to the shops, I don’t think about the route I take in case someone robs me at gunpoint.
So Monro is thinking about these security guides as a kind of ‘literary genre’:
I’m less interested in whether or not these tools are effective as such. Rather, I want to ask how these tools in particular orient us toward digital space, engage imaginaries of privacy and security, and structure relationships between users, hackers, governments, infrastructures, or machines themselves? In short: what are we asking for when we construe security as a browser plugin?
There’s a wider issue here about the pace of digital interactions, security theatre, and most of us getting news from an industry hyper-focused on online advertising. A recent article in the New York Times was thought-provoking in that sense, comparing what it’s like going back to (or in some cases, getting for the first time) all of your news from print media.
We live in a digital world where everyone’s seemingly agitated and angry, all of the time:
The increasing popularity of these guides evinces a watchful anxiety permeating even the most benign of online interactions, a paranoia that emerges from an epistemological collapse of the categories of “private” and “public.” These guides offer a way through the wilderness, techniques by which users can harden that private/public boundary.
The problem with this ‘genre’ of security guide, says Monro, is that even the good ones from groups like EFF (of which I’m a member) make you feel like locking down everything. The problem with that, of course, is that it’s very limiting.
Communication, by its very nature, demands some dimension of insecurity, some material vector for possible attack. Communication is always already a vulnerable act. The perfectly secure machine, as Chun notes, would be unusable: it would cease to be a computer at all. We can then only ever approach security asymptotically, always leaving avenues for attack, for it is precisely through those avenues that communication occurs.
I’m a great believer in serendipity, but the problem with that from a technical point of view is that it increases my attack surface. It’s a source of tension that I actually feel most days.
There is no room, or at least less room, in a world of locked-down browsers, encrypted messaging apps, and verified communication for qualities like serendipity or chance encounters. Certainly in a world chock-full with bad actors, I am not arguing for less security, particularly for those of us most vulnerable to attack online… But I have to wonder how our intensive speculative energies, so far directed toward all possibility for attack, might be put to use in imagining a digital world that sees vulnerability as a value.
At the end of the day, this kind of article serves to show just how different our online, digital environment is from our physical reality. It’s a fascinating sideways look, looking at the security guide as a ‘genre’. A recommended read in its entirety — and I really like the look of his blog!
Source: Jeffrey Moro
In the last couple of years, there’s been a move to give names to security vulnerabilities that would be otherwise too arcane to discuss in the mainstream media. For example, back in 2014, Heartbleed, “a security bug in the OpenSSL cryptography library, which is a widely used implementation of the Transport Layer Security (TLS) protocol”, had not only a name but a logo.
The recent media storm around the so-called ‘Spectre’ and ‘Meltdown’ shows how effective this approach is. It also helps that they sound a little like James Bond science fiction.
In this article, Zeynep Tufekci argues that the security vulnerabilities are built on our collective desire for speed:
We have built the digital world too rapidly. It was constructed layer upon layer, and many of the early layers were never meant to guard so many valuable things: our personal correspondence, our finances, the very infrastructure of our lives. Design shortcuts and other techniques for optimization — in particular, sacrificing security for speed or memory space — may have made sense when computers played a relatively small role in our lives. But those early layers are now emerging as enormous liabilities. The vulnerabilities announced last week have been around for decades, perhaps lurking unnoticed by anyone or perhaps long exploited.
Helpfully, she gives a layperson’s explanation of what went wrong with these two security vulnerabilities:
Almost all modern microprocessors employ tricks to squeeze more performance out of a computer program. A common trick involves having the microprocessor predict what the program is about to do and start doing it before it has been asked to do it — say, fetching data from memory. In a way, modern microprocessors act like attentive butlers, pouring that second glass of wine before you knew you were going to ask for it.
But what if you weren’t going to ask for that wine? What if you were going to switch to port? No problem: The butler just dumps the mistaken glass and gets the port. Yes, some time has been wasted. But in the long run, as long as the overall amount of time gained by anticipating your needs exceeds the time lost, all is well.
Except all is not well. Imagine that you don’t want others to know about the details of the wine cellar. It turns out that by watching your butler’s movements, other people can infer a lot about the cellar. Information is revealed that would not have been had the butler patiently waited for each of your commands, rather than anticipating them. Almost all modern microprocessors make these butler movements, with their revealing traces, and hackers can take advantage.
Right now, she argues, systems have to employ more and more tricks to squeeze performance out of hardware because the software we use is riddled with surveillance and spyware.
But the truth is that our computers are already quite fast. When they are slow for the end-user, it is often because of “bloatware”: badly written programs or advertising scripts that wreak havoc as they try to track your activity online. If we were to fix that problem, we would gain speed (and avoid threatening and needless surveillance of our behavior).
As things stand, we suffer through hack after hack, security failure after security failure. If commercial airplanes fell out of the sky regularly, we wouldn’t just shrug. We would invest in understanding flight dynamics, hold companies accountable that did not use established safety procedures, and dissect and learn from new incidents that caught us by surprise.
And indeed, with airplanes, we did all that. There is no reason we cannot do the same for safety and security of our digital systems.
There have been patches going out over the past few weeks since the vulnerabilities came to light from major vendors. For-profit companies have limited resources, of course, and proprietary, closed-source code. This means there’ll be some devices that won’t get the security updates at all, leaving end users in a tricky situation: their hardware is now almost worthless. So do they (a) keep on using it, crossing their fingers that nothing bad happens, or (b) bite the bullet and upgrade?
What I think the communities I’m part of could have done better at is shout loudly that there’s an option (c): open source software. No matter how old your hardware, the chances are that someone, somewhere, with the requisite skills will want to fix the vulnerabilities on that device.
Source: The New York Times