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GPS, Galileo & More: How do they work & what happened during the big outage?
from blog Bert Hubert's writings, | ↗ original
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More from Bert Hubert's writings
Shifting Cyber Norms: Microsoft security POST-ing to you
23 Jan 2025 |
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tl;dr: Microsoft and other email security scanners will visit the links in email you transmit, and run the JavaScript in those links, including calls that lead to POSTs going out. This used to be unacceptable, since POSTs have side effects. Yet here we are. This breaks even somewhat sophisticated single-use sign-on / email confirmation messages....
The surprising struggle to get a UNIX Epoch time from a UTC string in C or C++
19 Jan 2025 |
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So how hard could it be. As input we have something like Fri, 17 Jan 2025 06:07:07 in UTC, and we’d like to turn this into 1737094027, the notional (but not actual) number of seconds that have passed since 1970-01-01 00:00:00 UTC. Trying to figure this out led me to discover many ‘surprise features’ and otherwise unexpected behaviour of POSIX...
On Long Term Software Development
22 Dec 2024 |
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Recently the Dutch Electoral Board (where I am also a very part time advisor) invited me to do a talk reflecting on their open source Abacus vote tabulation software. Much software is now provided as a service, and is typically deployed continuously (CD, continuous deployment), surrounded by enough automated testing (CI, continuous integration)...
Welkom bij OpenTK (deel 2): de monitors
13 Dec 2024 |
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Welkom! Goed inzicht in ons parlement is belangrijk, soms omdat er dingen in het nieuws zijn. En soms juist omdat dingen (nog) niet in het nieuws zijn, maar er binnenkort wel besluiten over genomen gaan worden. De Tweede Kamer publiceert alles wat ze doen via een technische API, en dat is echt geweldig. Hierdoor kunnen we op Internet eigen...
Servers in de EU, eigen (dubbele) sleutels: helpt het?
11 Dec 2024 |
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Naar aanleiding van veel misverstanden hier een kort stukje over: Helpt het als Microsoft/Google/Amazon beloven dat mijn gegevens op servers in de EU worden opgeslagen? Kan ik met “eigen sleutels” / bring your own key / double key encryption / aparte opslag, mijn data in praktische zin beschermen tegen Amerikaanse spionage? Kan ik me zo...