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Automatic SOGo configuration for iOS (iPhone/iPad) and MacOSX (and more)
Apple provides a lot of autoconfiguration for their groupware (Mail, Address Book/Contacts, iCal Calendar) on their Desktop OS X systems and their mobile devices. However, some of this autoconfiguration was there before there were agreed-upon standards, which especially plagues Contacts and Calendar when working with the excellent SOGo groupware. Especially the AddressBook on OS X…
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Weak Keys in RC4
This is an archive of the original posts Andrew Roos made in 1995 to announce his discovery of weak keys in RC4. Even though most Wireless LAN access points avoid these keys since many years, this discovery eventually led to abandoning RC4 for use in WEP (“Wired Equivalent Privacy”) for Wi-Fi networks, as the privacy…
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How to block AI crawlers with robots.txt
If you wanted your web page excluded from being crawled or indexed by search engines and other robots, robots.txt was your tool of choice, with some additional stuff like <meta name=”robots” value=”noindex” /> or <a href=”โฆ” rel=”nofollow”> sprinkled in. It is getting more complicated with AI crawlers. Let’s have a look.
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Dealing with Apple .mobileconfig Configuration Profiles Quirks
During the preparation of the iOS/OS X SOGo autoconfiguration tool, I noticed a few quirks. In order to make it easier for others to use these profiles, I am documenting what is missing in the official documentation or does not work according to specs (i.e., which is broken), in the hope that .mobileconfig files will…
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DEFCON Voting Village 23 Panel
There was a DEFCON Voting Village panel ยซIf I can shop online, why can’t I vote online?ยป 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).
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Electronic Vaccination Certificate: Eureka! Eureka?
When I was reading the original โSpiegelโ article on the German Electronic Vaccination Certificate, I was fascinated.