Why the most successful Retefe spam campaign never paid off

Switzerland is one of the main targets of the Retefe banking trojan since its first appearance in November 2013. At that time, it changed the local DNS resolver on the computer (See also blog post “Retefe Bankentrojaner” in German only). Almost a year went by until they changed to the still current approach of setting … Continue reading “Why the most successful Retefe spam campaign never paid off”

Retefe with a new twist

A few months ago, we blogged about the banking trojan Retefe (Blog post in German) that was and still is targeting Switzerland. First off, Retefe is different because it only targets Switzerland, Austria and Sweden (and sometimes Japan). Contrast this to many other banking Trojans, which have a much more global and dynamic target list. … Continue reading “Retefe with a new twist”

Retefe Bankentrojaner

E-Banking ist seit seiner Entstehung ein attraktives Tummelfeld für Betrüger. Oft wird auf spezielle Schadsoftware, auf sogenannte Bankentrojaner, zurückgegriffen, um arglosen Opfern Geld abzuziehen. Die meisten dieser Bankentrojaner basieren auf technisch betrachtet ziemlich komplexen Softwarekomponenten: Verschlüsselte Konfigurationen, Man-in-the-Browser-Funktionalität, Persistenz- und Updatemechanismen, um einige zu nennen. Im letzten halben Jahr hat sich eine gänzlich neue Variante … Continue reading “Retefe Bankentrojaner”

Attack of the killer Ads

By Daniel Stirnimann and Serge Droz Recently I was quoted saying “… .ch and .li are the most secure (top-level) domains!”. In the same meeting, Security Rock Star Mikko Hyppönen claimed, “Surfing the Web with your laptop is the most dangerous thing you can do in the Internet.”  So what is true, what is false? … Continue reading “Attack of the killer Ads”