I recently got a US patent application granted by the US Patent and Trademark Office. The patent bears the title “System, Device, and Method of Managing Trustworthiness of Electronic Devices”.Continue reading "My new patent on device trustworthiness measurement"
On July 12th, I was interviewed on Security challenges of organizations deploying IoT. The recorded (and transcribed) video interview can be found here. For those who prefer a written abstract, here is the outline of what I said in reply to a short set of questions about the security challenges with IoT deployment, and the approach followed at Pelion to overcome them.Continue reading "An interview on security challenges of organizations deploying IoT"
I recently participated in a discussion about the role of machine-generated text in the spread of fake news.
The context of this discussion was the work titled: How Language Models Could Change Disinformation. The progress made by the industry in the area of algorithmic text generation has led to concerns that such systems could be used to generate automated disinformation at scale. This report examines the capabilities of GPT-3 — an AI system that writes text, to analyze its potential use for promoting disinformation (i.e., fake news).
The report reads:
In light of this breakthrough, we consider a simple but important question: can automation generate content for disinformation campaigns? If GPT-3 can write seemingly credible news stories, perhaps it can write compelling fake news stories; if it can draft op-eds, perhaps it can draft misleading tweets.
Following is my take on this.Continue reading "Machine generated content helping spread fake news"
On May 12th, the Biden administration issued an Executive Order that was written to improve the overall security posture of software products that the government buys from the private sector. Recent events, such as the SolarWinds hack, contributed to the realization that such a move is necessary.
This Executive Order is a big deal. Of course, nothing will change overnight, but given the size and complexity of the software industry, as well as the overall culture behind software security (the culture of: “If the customer doesn’t see it — don’t spend money on it”), an Executive Order can probably yield the closest thing to immediate improvement that we could reasonably wish for. The US Government is a very large customer, and all major vendors will elect to comply with its requirements rather than cross it all off their addressable markets.
A lot has been written on how important it is for the government to use its buying power (if not its regulatory power) to drive vendors into shipping more secure products. Product security suffers from what could best be described as a market failure condition, which would call for such regulatory intervention.
To not overly repeat the mainstream media, I would like to focus on one unique aspect of the current Executive Order, and on how it can ignite a new trend that will change product and network security for the better. I’ll discuss true machine-readable security documentation.Continue reading "One blessing of the Cybersecurity Executive Order"
I've been listening to the Risky Business security podcast for several years now, and mark it as among my favorite security podcasts, if not my favorite one. There are a few good security podcasts out there, but this is the one I listen to most rigorously, i.e., without missing an episode. Here is what makes this security podcast stand out.Continue reading "Recommended Podcast: Risky Business"
The book Essentialism: The Disciplined Pursuit of Less, by Greg McKeown, carries a very important message: you shall not seek to do more, but rather to do less things, but do the ‘right’ ones. When people succeed in life (even moderate success), they are encouraged to do more and hence de-focus. In general, our society promotes the concept of doing more and more, which makes it hard for us to just say ‘no’ to additional commitments, even if those commitments invoke activities are not within our priorities. As Greg McKeown nicely puts it: if you don’t prioritize your life, someone else will.Continue reading "Book review: "Essentialism: The Disciplined Pursuit of Less""
An NFT (Non-Fungible Token) is a data structure that points at a particular data object in a unique way. See it as a way of naming digital objects, such as photos, texts, audio or video, in a way that allows referring to them with no ambiguity.
The ability to refer to data objects allows to “mention” them in transactions. This seemingly trivial ability, when combined with the ability to create immutable records of transactions (as provided by Blockchains), allows us to create immutable records that refer to data objects.
Technically, NFTs do not require blockchains. You could take a photo of a cat, create an NFT for this photo, which is essentially a unique pointer to (or: a descriptor of) it, and then go on to write a real contract on paper that says “this photo of a cat, bearing this unique ID, is hereby assigned to John Smith”, whatever this assignment means.
Blockchains and smart contract technologies allow for such digital agreements to be stored in a public immutable record that does not allow anyone to change it once it was written. The combination of NFTs and blockchain-based smart contracts thus allows us to securely record agreements that declare ownership of digital goods. If you have any file (photo, text, video, etc.), you can create an attestation that tells the entire world that you assign this file to be owned by whoever. What does this “ownership” mean? – Good question; but whatever it means, billions of dollars have already been paid towards such ownerships. Is this real? The money surely is, but is also the value?Continue reading "On the value of NFT"
Israel is probably the most advanced to date in terms of COVID19 vaccination. With more than one third of the residents fully inoculated, life can almost get back to pseudo-normal. This, however, requires being able to tell the vaccinated people apart from those who are not. The green pass, or vaccination certificate, is made to achieve precisely that. Technically, this government-issued certificate is not substantially different than a driver’s license, just that it’s shorter lived, can be stored in a phone app, and most importantly: was designed in a hurry.
For something that was launched so quickly, it seems to be decently architected, but slightly better work could still be done to protect that piece of attestation that is so critical to public health.
What do we require of a vaccination certificate? Not much, really. It obviously needs to be as secure as it could be made under the strict cost and distribution constraints. The certificate has to also be easily renewable (it currently expires every six months), and it has to be verifiable by a wide range of checkpoints with varying capabilities. Finally, verification has to be both reliable and fast; entry into a shopping mall cannot resemble passport control, and people cannot arbitrarily be locked out of key facilities just because of simple IT downtime.
The certificate itself is sent to its holder by e-mail (or via a web-site), to be printed at home. There are no measures that could be taken to prevent anyone with Microsoft Paint from crafting fake such certificates. The digital part of the vaccination certificate, i.e., the QR Code printed on it, is the only part of the certificate that can practically be used against forgery.
See the following write-up as a quick guide to cheap-but-secure attestation certificates; for COVID or otherwise.Continue reading "COVID vaccination certificates done almost right"
Our digital lives are more or less governed by very few providers of products and services. Our desktop computing is almost invariably based on Microsoft Windows, our document collaboration is most likely based on either Google Docs or on O365, our instant messaging is either Whatsapp or Slack, our video collaboration is either Teams or Zoom, etc. Given the prevalence of digital life and work, you would expect more options to exist. However, all those large pies seem to each be divided into just a few thick slices each. Those lucky providers that won their dominance did so by catering to the needs of the masses while serving their own agendas, or more accurately: by serving their own agendas while giving enough to make their products preferable by the masses.
Customers appreciate ease of deployment and ease of use, and all of the dominant products excel in that. However, customers never said anything too explicit about security and customers never demanded data sovereignty. Those properties are also very non-compelling for some providers, either because they increase cost, because they prevent lock-in, or because they hinder business models that rely on using customer data. The vast majority of customers never really required, and hence never really got, anything more than ease of use and ease of deployment, along a few key functional features. For most customers, this is enough, but customers who also require security, privacy, and/or data sovereignty, face a challenge when working out alternatives.
But alternatives do exist, for desktop computing, for collaboration and for messaging and video communication. Those alternatives play an important role in our digital ecosystem, even if most people never care to use them.Continue reading "The role of security focused alternatives"
This is a brilliant TED Talk by Niro Sivanathan.
It introduces the dilution effect. Information that is less relevant is not merely discarded, but rather dilutes the impact of the information that is relevant. So next time you bring up arguments for something, remember that your arguments don’t add up – they average out.