Living off the land is not the title of a gardening book. It’s the goal of attackers going after your network. Rather than installing malicious software on your network that antivirus software might flag, attackers use the code already there to launch attacks. The tools that you use to monitor, maintain and access your network are often the same code that attackers use to attack your network. PowerShell is a prime example.
The U.S. National Security Agency (NSA), U.S. Cybersecurity and Infrastructure Security Agency (CISA), New Zealand’s NCSC, and the UK NCSC recently released a document called Keeping PowerShell: Security Measures to Use and Embrace. This guidance recommends keeping PowerShell in your network rather than blocking but offers the following advice to keep it secure.
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