Example of connecting to MITRE TAXII to retrieve collection information

PowerShell_TAXII_Example.ps1

$Header = @{
  'Accept' = 'application/vnd.oasis.stix+json; version=2.0'
}

$BaseURI = 'https://cti-taxii.mitre.org/stix/'
$EnterpriseCollection = 'collections/95ecc380-afe9-11e4-9b6c-751b66dd541e/objects'
$Uri = '{0}{1}' -f $BaseURI, $EnterpriseCollection

$Response = Invoke-RestMethod -Headers $Header

<#
  Response will be like:
    type   id                                           spec_version objects
    ----   --                                           ------------ -------
    bundle bundle--fbba7fc8-3f3a-4f1f-86a4-54d812f37de4 2.0          {@{name=.bash_profile and .bashrc Mitigation; descrip...
#>

<# 
  Objects are structured like this ($Response.objects[0]):
    name                : .bash_profile and .bashrc Mitigation
    description         : Making these files immutable and only changeable by certain administrators will limit the ability
                          for adversaries to easily create user level persistence.
    external_references : {@{url=https://attack.mitre.org/wiki/Technique/T1156; source_name=mitre-attack; external_id=T1156}}
    created_by_ref      : identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5
    id                  : course-of-action--4f170666-7edb-4489-85c2-9affa28a72e0
    created             : 2018-04-18T17:59:24.739Z
    modified            : 2018-04-18T17:59:24.739Z
    type                : course-of-action
#>