China has ramped up its crackdown on foreign espionage with a new website in both Mandarin and English that allows users to report alleged threats such as collusion with foreign countries that endangers the country's "sovereignty, territorial integrity and national security."

The website,, which was launched by the Ministry of National Security on Sunday, lists 21 possible reportable activities, including activities "to subvert the state power and overthrow the socialist system."

The list also includes acts "to dismember the state," including with elements from outside the country, that could relate to disputed territories — such as the South China Sea or Senkaku Islands — as well as areas such as Tibet, where sovereignty has been debated.