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13
06
2007
Mitten letzten Jahres musste schon mal ein Erfolgreiches Projekt, welches sich zur Aufgabe gemacht hatte gegen Spamer vorzugehen aufgrund von lang anhaltenden DDoS beendet werden.
Die Rede ist hier Blue Frog Projekt der Firma Blue Security. Blue Frog war ein verteiltes System, das gegen Spamer mit deren eigenen Techniken vorgegangen war. Es hatte die Webseiten von Firmen welche Spam versenden, mit Tausenden von bitten um das Aufhören geflutet. Durch spezielle Scripte die diesen Vorgang automatisierten, die von Mitarbeitern des Projekts vorbereit wurden, konnten Benutzer des Systems, welche von Spam belästigt worden waren, dem E-Mail Absender eine nette Botschaft zukommen lassen, mit der Bitte mit der Spam-Versendung aufzuhören. Da den Spamern dies natürlich nicht gefiel, versuchten diese das Projekt mit verschiedenen Mitteln zu Fall zu bringen, doch erst mit gezielten DoS- bzw. DDoS-Attacken hatten die Spamer ihr ziel erreicht. Das Ende des Projektes.
Nun ein gutes Jahr später, sind schon wieder erfolgreiche Projekte, die sich im Kampf gegen die Spamer einsetzen von DDoS-Attacken betroffen. Die Anti-Spam-Dienste Spamhaus, SURBL und URIBL, sind wohl seit mitte vergangener Opfer von DDoS-Attacken. Durch auflisten von Spam-versendende Rechnern und den zugehörigen IP-Adressen sowie für das Aufbereiten einer Mailfilterung sind diese Projekte bekannt. Weiter Information zu den Angriffen kann in der Newsgroup news.admin.net-abuse.email nach gelesen werden:
http://groups.google.de/group/news.admin.net-abuse.email/browse_thread/thread/2790ae4a2f04a388/28d49877cc8dbc2d
Mittlerweile sind die Webseiten wieder zu erreichen, aber dennoch traurig wenn Projekte durch solche Angriffe in die Knie gezwungen werden.
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07
06
2007
Das
Phrack-Magazin ist ein kostenloses Untergrund-Magazin, welches sich mit Themen wie IT-Sicherheit, Hacken und Phreaking auseinander setzt. Es veröffentlicht seit dem 17. November des Jahres 1985 verschiedene Ausgaben zu den oben genannten Themen, aber auch Informationen wie das Erstellen einer eigenen Bombe bleibt nicht aus. Bekannt ist vorallem die Ausgabe 49 in der Aleph One den Artikel
Smashing The Stack For Fun And Profit veröffentlichte. Dies war die erste Veröffentlichung zur Ausnutzung von Pufferüberlauf-Schwachstellen. Im Sommer 2005 wurde dann die vorerst letzte Ausgabe des Magazins mit der
Ausgabe 63 veröffentlicht. Doch seit 27. Mai diesen Jahres hat die Gruppe
The Circle of Lost Hackers als neuer Herausgeber die
Ausgabe 64 veröffentlicht. In dieser Ausgabe werden zunächst die neuen Herausgeber vorgestellt und es finden sich viele Interessante Artikel zur IT-Sicherheit vor.
So zum Beispiel der Artikel
Blind TCP/IP hijacking is still alive, welcher sich mit dem Hijacking bzw. den Übernehmen von TCP/IP Verbindungen befasst. Dabei wird gezeigt, wie mit Hilfe der IP_ID im IP Header bei einigen Betriebssystemen wie Microsoft Windows XP Rückschlüsse auf die zufällige Portnummer des Clients, die vom Betriebssystems generiert wird, geschlossen werden kann. Weiterhin wird dazu aufgezeigt wie man Rückschlüsse auf die richtige Sequenznummer vom Server und Client geschlossen werden kann. Weitere interessante Artikel sind zum Beispiel auch
The art of exploitation: Autopsy of cvsxpl sowie
Hacking deeper in the system, wobei der erste genannte Artikel auf die Kunst der Exploitation eingeht und dies an einen Exploit aus dem Jahre 2004 veranschaulicht. Der zweite genannte Artikel hingegen befasst sich mit der Thematik des Hardware-Hacking.
Enjoy it 
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27
04
2007
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21
04
2007
Was Google nicht findet, existiert auch im Internet nicht. Dies ist eine weit verbreitende These von vielen Internet Benutzern.
Doch was für Alternativen gibt es zu Google?
Ich habe hier mal eine Liste an Suchmaschinen die ich immer mal wieder anstelle von Google verwende:
Live Searchaltavista
msdeweyFür deutschsprachige Seiten kann ich folgende Suchmaschinen empfehlen:
http://www.seekport.de/
http://www.metager.de/
http://www.metager2.de
Webseiten die einem beim Suchen nach Informationen auch indirekt weiterhelfen können sind z.B. http://suma-lab.de/ oder auch http://www.suchfibel.de
Einen interessanten Fernsehbericht, welcher sich mit Google befasst, lief gestern auf Arte. Für alle die sich für diesen Bericht interessieren, können ihn sich in den nächsten 7 Tagen unter http://www.arte.tv/de/1543916.html ansehen.
Über sinnvolle Ergänzungen würde ich mich sehr freuen.
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