India, Sept. 9 -- Pakistan is tapping millions of phones of its citizens and censoring their social media through a Chinese-built firewall, according to a new report by Amnesty International.

The rights group revealed that Pakistan's intelligence agencies have the ability to monitor at least 4 million mobile phones at any given time through a system known as the Lawful Intercept Management System (LIMS).

Simultaneously, internet activity is filtered and censored via a powerful Chinese-built firewall called Web Monitoring System 2.0 (WMS 2.0), which can block or slow access to websites and social media platforms across the country.

The number of phones under surveillance could be higher as all four major mobile operators have been order...