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Kia ora koutou

Thank you for the opportunity to update the Committee about the work of the GCSB since I last appeared before you.

This post highlights a simple mitigation to improve the security posture of your organization. The idea is to, by practical means, limit attack surface and prevent spreading of automated malware, as well as limiting lateral movement by adversaries.

Malware can spread fast and damage businesses at scale.

SQL Slammer [1] and WannaCry [2] are two well-known cases that showed how quickly and damaging this can be. Interstingly, both of these disasters were nearly 15 years apart.