https://michilehr.deGatsbyJSThu, 07 May 2026 18:46:53 GMT
This problem was surely not created by AI, but the rapid adoption of it is amplifying those effects. ]]>https://michilehr.de/2025-12-31-you-should-know-what-you-are-doing https://michilehr.de/2025-12-31-you-should-know-what-you-are-doing Wed, 31 Dec 2025 00:00:00 GMT
We found a fitting product and the seller promised us that the controller of the turnstile can easily be integrated into our local on-site application. Of course it was not as easy as promised. We only received a DLL as an SDK for C++ for the protocol called LL268 and a demo application. So how to integrate this turnstile into our software?

Well, eventually I was able to reverse engineer the core functionality of the API so we were able to use it for our purpose. Since the product is not used any longer, I can finally write about it. ]]>https://michilehr.de/reverse-engineering-the-api-of-a-turnstile-controllerhttps://michilehr.de/reverse-engineering-the-api-of-a-turnstile-controllerSun, 20 Oct 2024 00:00:00 GMT
In 2021, Broken Access Control moved up from the fifth to the first position in the OWASP Top10. Besides, I did report some serious vulnerabilities to SaaS companies regarding unhandled authorization in the last months.

That's why it is important to know the difference between the two and what else to take care of to protect resources and information from being read or altered by third parties which should be prevented from doing so in order to secure web applications. ]]>https://michilehr.de/authorization-vs-authentication-securing-web-applicationshttps://michilehr.de/authorization-vs-authentication-securing-web-applicationsSun, 08 Sep 2024 00:00:00 GMT
In this tutorial, I will show you how to shrink an image to a specific size so it can fit on a smaller sd card. ]]>https://michilehr.de/shrink-an-image-of-a-single-board-computer-like-the-raspberry-pi-for-smaller-sd-cardhttps://michilehr.de/shrink-an-image-of-a-single-board-computer-like-the-raspberry-pi-for-smaller-sd-cardFri, 26 Jan 2024 00:00:00 GMThttps://michilehr.de/full-text-search-with-mysql-and-doctrinehttps://michilehr.de/full-text-search-with-mysql-and-doctrineTue, 26 Dec 2023 00:00:00 GMT
So how can we reduce the test runtime to give the engineers faster feedback and improve the CI pipeline when using MySQL or MariaDB? ]]>https://michilehr.de/reduce-integration-test-runtime-while-using-mysqlhttps://michilehr.de/reduce-integration-test-runtime-while-using-mysqlSun, 05 Nov 2023 00:00:00 GMT You can use interpolation and extrapolation to fill the missing gaps in your data set. ]]>https://michilehr.de/find-the-missing-data-interpolation-and-extrapolation-with-pythonhttps://michilehr.de/find-the-missing-data-interpolation-and-extrapolation-with-pythonSat, 14 Oct 2023 00:00:00 GMT
Spoiler: You do not need an extension. ]]>https://michilehr.de/how-to-test-graphql-with-codeceptionhttps://michilehr.de/how-to-test-graphql-with-codeceptionThu, 15 Dec 2022 00:00:00 GMT The API for sending the data directly from the sensor works perfect but the community integration for Home Assistant does not, so I have added the sensor locally with the help of the Scrape Integration which absolutely makes more sense. ]]>https://michilehr.de/local-integration-of-airrohr-in-home-assistanthttps://michilehr.de/local-integration-of-airrohr-in-home-assistantSun, 20 Nov 2022 00:00:00 GMT It turned out that the random string generator was not as random as I thought.
Do you run automated tests against a random string generator if it can provide for sufficient randomness? ]]>https://michilehr.de/do-you-test-for-sufficient-randomnesshttps://michilehr.de/do-you-test-for-sufficient-randomnessSat, 10 Sep 2022 00:00:00 GMThttps://michilehr.de/open-current-folder-in-phpstorm-from-command-linehttps://michilehr.de/open-current-folder-in-phpstorm-from-command-lineFri, 02 Sep 2022 00:00:00 GMThttps://michilehr.de/shell-keyboard-shortcuts-you-will-lovehttps://michilehr.de/shell-keyboard-shortcuts-you-will-loveFri, 20 May 2022 00:00:00 GMThttps://michilehr.de/the-best-cli-tools-i-use-as-a-developerhttps://michilehr.de/the-best-cli-tools-i-use-as-a-developerTue, 01 Feb 2022 00:00:00 GMT At Germany, we didn't hear anything - but the blast wave which has traveled around the whole globe was measurable. ]]>https://michilehr.de/the-eruption-of-hunga-tonga-volcano-and-its-blast-wave-around-the-globehttps://michilehr.de/the-eruption-of-hunga-tonga-volcano-and-its-blast-wave-around-the-globeSun, 16 Jan 2022 00:00:00 GMThttps://michilehr.de/esphome-on-the-magic-home-led-wifi-monochromatic-controllerhttps://michilehr.de/esphome-on-the-magic-home-led-wifi-monochromatic-controllerMon, 13 Dec 2021 00:00:00 GMT In these dumps, lots of passwords of older accounts were hashed by the insecure SHA1 or even the absolutely unsafe MD5 algorithm.
Data security doesn't get the love it should get. Time to act.]]>https://michilehr.de/hash-the-hash-password-hashing-migrationhttps://michilehr.de/hash-the-hash-password-hashing-migrationSun, 07 Nov 2021 00:00:00 GMTFor my surprise, it is a dump sensor with no ZigBee support like some other devices IKEA has released in the past months.
So let's make the sensor smart with the help of ESPHome and Home Assistant and add an additional eCO2 sensor.]]>https://michilehr.de/ikea-hacking-making-the-air-quality-sensor-vindriktning-smart-and-adding-an-additional-eco2-sensor-powered-by-esphome-and-home-assistanthttps://michilehr.de/ikea-hacking-making-the-air-quality-sensor-vindriktning-smart-and-adding-an-additional-eco2-sensor-powered-by-esphome-and-home-assistantSun, 15 Aug 2021 00:00:00 GMThttps://michilehr.de/macos-productivity-the-tools-i-cant-live-withouthttps://michilehr.de/macos-productivity-the-tools-i-cant-live-withoutMon, 14 Jun 2021 00:00:00 GMThttps://michilehr.de/how-to-integrate-an-external-api-into-home-assistant-an-example-with-the-ambee-pollen-apihttps://michilehr.de/how-to-integrate-an-external-api-into-home-assistant-an-example-with-the-ambee-pollen-apiFri, 16 Apr 2021 00:00:00 GMThttps://michilehr.de/2020-12-27-adding-a-single-line-can-destroy-the-reputation-of-your-apphttps://michilehr.de/2020-12-27-adding-a-single-line-can-destroy-the-reputation-of-your-appSun, 27 Dec 2020 00:00:00 GMThttps://michilehr.de/why-you-should-and-how-you-could-implement-dark-modehttps://michilehr.de/why-you-should-and-how-you-could-implement-dark-modeSat, 14 Nov 2020 00:00:00 GMThttps://michilehr.de/zero-downtime-on-mysql-schema-changehttps://michilehr.de/zero-downtime-on-mysql-schema-changeWed, 14 Oct 2020 00:00:00 GMThttps://michilehr.de/combining-data-sources-without-control-structureshttps://michilehr.de/combining-data-sources-without-control-structuresThu, 05 Nov 2015 00:00:00 GMThttps://michilehr.de/timelapse-of-the-sun-eclipse-with-the-help-of-pythonhttps://michilehr.de/timelapse-of-the-sun-eclipse-with-the-help-of-pythonSat, 21 Mar 2015 00:00:00 GMThttps://michilehr.de/anchor-link-with-a-fixed-headerhttps://michilehr.de/anchor-link-with-a-fixed-headerWed, 21 Jan 2015 00:00:00 GMThttps://michilehr.de/resize-a-lvm-partition-in-a-debian-virtualboxhttps://michilehr.de/resize-a-lvm-partition-in-a-debian-virtualboxMon, 15 Sep 2014 00:00:00 GMThttps://michilehr.de/overwrite-cmds-and-ctrls-in-javascripthttps://michilehr.de/overwrite-cmds-and-ctrls-in-javascriptMon, 15 Sep 2014 00:00:00 GMThttps://michilehr.de/fontello-or-how-to-master-icon-fonts-in-web-developmenthttps://michilehr.de/fontello-or-how-to-master-icon-fonts-in-web-developmentSat, 09 Aug 2014 00:00:00 GMThttps://michilehr.de/some-things-to-know-when-going-online-multilingualhttps://michilehr.de/some-things-to-know-when-going-online-multilingualFri, 01 Aug 2014 00:00:00 GMThttps://michilehr.de/resize-iframe-by-its-content-cross-domainhttps://michilehr.de/resize-iframe-by-its-content-cross-domainFri, 24 Jan 2014 00:00:00 GMThttps://michilehr.de/why-you-should-think-before-using-return-falsehttps://michilehr.de/why-you-should-think-before-using-return-falseFri, 27 Sep 2013 00:00:00 GMThttps://michilehr.de/resize-images-and-save-with-new-name-recursively-with-bashhttps://michilehr.de/resize-images-and-save-with-new-name-recursively-with-bashMon, 06 May 2013 00:00:00 GMThttps://michilehr.de/jimflow-my-bachelor-thesishttps://michilehr.de/jimflow-my-bachelor-thesisMon, 24 Sep 2012 00:00:00 GMT