Of course such campaigns are very unusual, especially from such a big and well known company like GMX. They added some crapware to the list to make it look more legitimate. There is absolutely no security risk from the mentioned ad blockers. This is a FUD ( fear, uncertainty, and doubt) campaign by GMX because they want to display their ads. Ok, they mention other (pretty obviously crapware) addons, but is Adblock Plus really a security threat or do that site's operators simply use the opportunity to try and scare inexperienced users into viewing their ads again? Security mechanisms such as SSL cannot avoid that. Such addons can access all your browser's input and can also forward them to third parties - even your banking password. Sicherheitsmechanismen wie SSL kГ¶nnen das nicht verhindern. Dies kann auf allen Web-Seiten passieren. Solche Add-ons haben Zugriff auf alle Ihre Eingaben im Browser und kГ¶nnen diese auch an Dritte weitergeben вЂ“ auch Ihr Bank-Passwort. Here's a quote from that site plus its translation: My email-provider's website ( ) recently started linking to the (German) site which basically claims that due to its capabilities to modify a site's appearance, Adblock Plus (and others) might actually be abused for phising.

Is adblock plus safe