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MAS Cyber Hygiene

The six measures, met and evidenced.

A mandatory baseline, not a best-effort one

Unlike the TRM Guidelines, the MAS Notice on Cyber Hygiene is legally binding. The applicable Notice depends on your sector — Notice 655 for banks, PSN06 for payment institutions, and equivalents across other regulated entities — but the substance is consistent: six measures you must implement and be able to evidence.

Those six are securing administrative accounts, applying security patches in a timely manner, deploying security devices such as firewalls at the network perimeter, running anti-malware protection, enforcing multi-factor authentication for critical and administrative access, and maintaining a written set of security standards. Falling short is a compliance failure, not a gap on a maturity curve.

What we do

  • Verify. We test each measure against your live environment, not just your policy library.
  • Evidence. We assemble the artefacts that prove the control operates as required under your Notice.
  • Remediate. Where a measure falls short, you get a prioritised plan to close it before it becomes a finding.
  • Attest. We prepare you to stand behind your compliance with confidence.

Held to the letter

Because these obligations are binding, we focus on what is demonstrable. The output is an evidence-backed position on each measure that you can present to MAS, your board, or an auditor without caveats.