Internet service providers can be legally required to deny their customers access to websites which infringe copyright, a European Union court ruled on Thursday. In a decision with implications for European Internet service providers (ISPs), the Court of Justice of the European Union in Luxembourg upheld the decision of an Austrian court to compel an ISP to deny its customers access to a website.Asked by the Austrian Supreme Court to interpret the EU Copyright Directive and basic rights enshrined in EU legislation, the EU court found that an injunction against ISPs to deny access to websites was within the EU laws and regulations. However, the court found ISPs must ensure that blocking access to websites should not deprive users of the possibility of lawfully accessing the information available.