The call by Democratic senator Mark Warner and his Republican colleague Marco Rubio followed a Buzzfeed report saying TikTok staff in China could access private data of US users

``To kick them out, we must understand the tradecraft and detect them beyond just initial access,'' tweeted a National Security Agency official.

Western financial firms have been warned that China's new cybersecurity rules could pose 'significant systemic risks' to their operations

Three US agencies said Pyongyang dispatches thousands of information technology workers worldwide, taking advantage of existing demands for specific skills

The pillars of the new law include protecting sensitive technology, strengthening supply chains for semiconductors and encouraging new tech such as artificial intelligence

The new rules were brought in by India's Computer Emergency Response Team as part of a wide-ranging tech crackdown on firms operating in the country