More fun publisher surveillance: Elsevier embeds a hash in the PDF metadata that is *unique for each time a PDF is downloaded*, this is a diff between metadata from two of the same paper. Combined with access timestamps, they can uniquely identify the source…

At 16:48 UTC on Tuesday Jan 25, 2022, a third party informed Let’s Encrypt / ISRG that, while examining the Boulder codebase, they had noticed two instances of specification non-compliance in our implementation of the “TLS Using ALPN” validation method (BRs…

Engineers at the Tokyo Institute of Technology (Tokyo Tech) have found a new approach for combining data acquired wirelessly from a large number of sensors. The technique is based on considering the &...

Every Sunday, I send out a newsletter called cron.weekly to over 10.000 subscribers. In this post, I’ll do a deep-dive into how those mails get delivered to subscribers.

Every Bitcoin transaction is stored in the distributed database known as the Bitcoin blockchain. However, people have found ways to hack ...

The home for Ruby-oriented content including Rails, Sinatra, Turbo, Rack, and more.

Engineering deals in lifetimes, both human and otherwise. If not fatigue or fracture, than corrosion or erosion; if not war or vandalism, then taste or fashion claim not only the body but the very …

Maybe Libra was just very stupid. Because it was a blockchain project started by bitcoiners. Maybe it was always just dumb as hell.

The “father of information theory” also paved the way for AI

Five years ago, at 17, while working on my app, I found a strange request while debugging the app via Charles Proxy – HTTP debugger. I had no idea why my app made this request, but it was definitely interesting: the id in the response looked like a Google…

Query data on the command line with SQL-like SELECTs powered by Python expressions - dcmoura/spyql

This is not a drill. twitter.com/matthew_d_gree…