Internal Security Department (Singapore)

Common card · No. 373162

The Internal Security Department (ISD) is the principal security agency and domestic intelligence service of Singapore. The department is tasked with collecting and analysing intelligence, making assessments, and taking executive actions to counter national security threats to the country's sovereignty, safety, and stability. As a counter-intelligence and counter-terrorism organisation, the ISD is responsible for protecting Singapore from espionage or spying, foreign interference, covert operations, subversion, terrorism, organised crime, and political, racial or religious extremism. The ISD is empowered to conduct mass surveillance and covert security operations. It also has the utmost right to indefinitely detain individuals without trial, when a suspect is believed to be a threat to Singapore's national security.

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