digital self defense and everything IT
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Measures against Slowloris attacks
In a Slowloris attack a client (or a botnet) opens a large amount of connections to a web server and holds them open. It does not send complete requests so you might find no request of the attacker in an Apache log — quite devious. So… The malicious client continues to open new connections using…
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Web fonts slowly picking up pace
Web fonts have been adopted by all major web browsers. What Firefox 3.1+ w/ Noscript users might not know is that Noscript blocks “font face” by default so they do not get to see nice fonts. There are two easy ways though to enable web fonts: Left-click Noscript icon on the bottom right corner of…
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Browser detection on the verge of IE6’s death
Internet Explorer 6 is on the verge of death. Google will phase out support of this old fellow very soon. FINALLY I might add. While they will invite IE6 users to install Chrome, Firefox or some other modern browser, other websites redirect old browsers to their mobile sites. So it is important to minimize false…
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Deutschland und Amazon AWS (aktualisiert)
Wer sich dafür interessiert, Amazon Web Services (AWS) zu nutzen, beispielsweise Elastic Computing (EC2), Cloudfront oder S3, sollte eines wissen: Es gibt keine vorsteuerabzugsfähigen Rechnungen von “Amazon Web Services LLC”. Rumms! Das sitzt… Laut Aussage meines Steuerberaters wäre dafür ein Hinweis auf § 13b UStG oder “reverse charge” nötig. Ich habe keine große Hoffnung, dass…
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Thunderbird 3.0.1 and Lightning… they did it again
Trouble using the latest Thunderbird 3.0.1 with Lightning? Fear not, use a nightly build.
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“Why is my browser so slow?”
Every now and then people complain about their web browser being slow. The conversation usually goes like this: Me: Ok which browser are you using and which version? Customer: Firefox 3.5 Me: Ok which plugins did you install? Customer: Adblocker, Noscript, FoxyProxy, HTML validator, Firebug, Google Speed, SkipScreen, FireFTP, WeatherBug, Fireshot. Ah yes and TwitterBar.…