Chinese telecommunications equipment supplier Huawei Technologies has opened a cyber security testing centre in Brussels, with the company's deputy chairman saying that trust in cyber security is a major challenge globally in the digital era.

Apple backs the passage of a federal privacy law in the United States which should be based on four essential rights, the company's chief executive, Tim Cook, has told a privacy conference in Brussels.

The European Union has hit Google with a second fine in as many years, demanding that the search behemoth pay €4.34 billion (US$5.05 billion, A$6.82 billion) for breaching anti-trust rules over its Android mobile operating system.