When the Australian Signals Directorate (ASD) released its Top Four Strategies to Mitigate Targeted Cyber Intrusions in 2011, it was revolutionary, because it cut to the chase. Do these four things first, before anything else, and you'll repel 85 percent of targeted intrusions.
On Monday, the ASD released the new improved version. It's now the Essential Eight, and the advice is just as blunt.
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