by Drew Wade, Emily Liu, and Siddarth Adukia TL; DR We studied a range of Canadian provinces' proof-of-vaccination apps to analyze their associated security and privacy properties. In particular, building on prior work in which some of us created an assessment framework for evaluating the security & privacy of vaccine passports, in this post, we … Continue reading Exploring the Security & Privacy of Canada’s Digital Proof of Vaccination Programs
Vendor: Shopify Vendor URL: https://shop.app/ Versions affected: Shop Android 2.19.0-release+307, Shop iOS 2.20.0 Authors: Dan Hastings – dan.hastings[at]nccgroup[dot]com Summary In the Shop app when adding a package, any data that matches a specific format defined by Shopify that is contained on the global pasteboard (iOS) or clipboard (Android) is automatically sent without user interaction to … Continue reading Technical Advisory – Shop app sends pasteboard data to Shopify’s servers
Created by Dan Hastings and Emanuel Flores Solitude is an open source privacy analysis tool that enables you to conduct your own privacy investigations into where your private data goes once it leaves your web browser or mobile device. Whether a curious novice or a more advanced researcher, Solitude makes the process of evaluating an … Continue reading Tool Release – Solitude: A privacy analysis tool
Earlier this month, our Cryptography Services team got together and attended (virtually) the IACR's annual Real World Cryptography (RWC) conference. RWC is a fantastic venue for the latest results in real world cryptography from industry and academia. Holding this conference virtually inevitably introduced some changes: to accommodate as many time zones as possible, the daily … Continue reading Real World Cryptography Conference 2021: A Virtual Experience
On April 10, Apple and Google announced1, 2 that they were joining forces in an effort to help reduce the spread of COVID-19. Their solution leverages Bluetooth technology to trace interactions between individuals. This principle is known as contact tracing and public health agencies are heavily relying on it to monitor and prevent the spread … Continue reading How cryptography is used to monitor the spread of COVID-19
Ethereum, a popular cryptocurrency, utilizes a P2P flood network overlay protocol in order to propagate new transactions and state around the network. As has been shown in previous works[^1][^2], observing the propagation of transactions through the peer-to-peer network layer is often enough to deanonymize users of cryptocurrency networks....