Attacks that unmask anonymous blockchain transactions can be used against everyone who ever relied on the defective technique

In An Empirical Analysis of Traceability in the Monero Blockchain, a group of eminent computer scientists analyze a longstanding privacy defect in the Monero cryptocurrency, and reveal a new, subtle flaw, both of which can be used to potentially reveal the details of transactions and identify their parties. Read the rest

The Australian health authority believed it had "anonymised" a data-set of patient histories, but academics were easily able to unscramble it

The Australian government's open data initiative is in the laudable business of publishing publicly accessible data about the government's actions and spending, in order to help scholars, businesses and officials understand and improve its processes. Read the rest

Big Data's religious faith denies the reality of failed promises, privacy Chernobyls

Maciej Ceglowski (previously) spoke to a O'Reilly's Strata Big Data conference this month about the toxicity of data -- the fact that data collected is likely to leak, and that data-leaks resemble nuclear leaks in that even the "dilute" data (metadata or lightly contaminated boiler suits and tools) are still deadly when enough of them leak out (I've been using this metaphor since 2008). Read the rest