Cloak – The Central Privacy Toolkit for Policy-Compliant Data Anonymisation | Singapore Government Developer Portal
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Cloak (formerly known as “enCRYPT”) is a one-stop, self-service web application that helps everyday public officers apply data anonymisation techniques to datasets and review re-identification risks. This will be in compliance with the guidelines in the Instruction Manual for ICT&SS Management (formerly IM8) for data-sharing with non-government entities and other custom use cases.

As a central privacy toolkit for Singapore’s public sector users, Cloak makes it simple to transform and anonymise sensitive data so that resources can be allocated to other tasks such as innovation.

Cloak is developed by GovTech’s Data Science and Artificial Intelligence Division (DSAID). Moving forward, Cloak will provide more privacy-preserving services, such as differential privacy and synthetic data generation.

How It Works

Cloak is a web application that allows public service officers to upload, tag and transform data, as well as address re-identification risks. Refer to Fig 1 for a step-by-step user guide for Cloak.

Cloak is also available through APIs.

Fig 1: This infographic shows how public officers can use enCRYPT to anonymise their data.
Fig 1: Step-by-step guide on how public officers can use Cloak to anonymise tabular datasets

Key Benefits

  • Simplification of policy compliance: Cloak provides policy guardrails and a guided walkthrough to adhere to the Anonymisation Guidelines based on the ICT&SS Management.
  • Easy to use: It has a Point-and-click approach that is suitable for non-technical users.
  • Flexible and can be customised to suit specific use cases: Supports a wide variety of modular use cases for data transformation and/or re-identification risk assessment, with the ability to process classified data at scale.
  • Time and cost savings: Cloak helps to replace manual processes for anonymising data which can be extremely time consuming. By freeing up time through the use of Cloak, resources can be allocated to other innovative projects, incurring cost savings in the process.


Cloak is currently free for public officers to use.

Contact Us

Reach out to the product team with your queries or feedback through this form.

Last updated 06 May 2024

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