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Category: General

Obtaining TLS certificate information on the command line

Here are a few helpful commands if you want to inspect and dump certificates for analysis or debugging:

October 15, 2025
50 years of microprocessor trend data

I recently wrote a (German) article including this graphic (in German). Here is an English version of it. Have fun!

October 13, 2024
Compact Archive for WordPress

The default WordPress «Archive» block becomes very long and narrow, when months accumulate. Here is an easy way to make it more compact.

July 27, 2024
DEFCON Voting Village 23 Panel

There was a DEFCON Voting Village panel «If I can shop online, why can’t I vote online?» which I found extremely important to read or listen to. Not just for me, in fact, for anyone talking about electronic voting. Here is a transcript for those who prefer reading (or searching for keywords).

February 12, 2024
SMTP Smuggling Status

«SMTP Smuggling» is a vulnerability that allows to circumvent some mail checks at the receiver and therefore will allow additional spam and/or phishing messages through. Here is the list of what we currently know.

December 26, 2023
The year in review

This is the time to catch up on what you missed during the year. For some, it is meeting the family. For others, doing snowsports. For even others, it is cuddling up and reading. This is an article for the latter.

December 23, 2023
Inefficiency is bliss (sometimes)

Bureaucracy and inefficiency are frowned upon, often rightly so. But they also have their good sides: Properly applied, they ensure reliability and legal certainty. Blockchain disciples want to “improve” bureaucracy-ridden processes, but achieve the opposite. Two examples:

July 15, 2023
The FTX crypto exchange and its spider web

Yesterday, the U.S. Securities and Exchange Commission (SEC) released its indictment against Sam Bankman-Fried. It details the financial entanglements of FTX, Alameda Research and more than a hundred other companies and individuals. We have tried to disentangle these allegations somewhat for you.

December 14, 2022
Reproducible AI Image Generation: Experiment Follow-Up

Inspired by an NZZ Folio article on AI text and image generation using DALL•E 2, I tried to reproduce the (German) prompts. Someone suggested that English prompts would work better. Here is the comparison.

December 1, 2022
Web3 for data preservation? (Or is it just another expensive P2P?)

Drew Austin raises an important question in Wired: How should we deal with our accumulated personal data? How can we get from randomly hoarding to selection and preservation? And why does his proposed solution of Web3 not work out? A few analytical thoughts.

November 19, 2022

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Content on this site is licensed under CC-BY-4.0 unless otherwise noted. Some image creation has been assisted by AI, especially the weird-looking teasers.