-Sanitize::Config::OSM[:elements] -= %w(div style)
-Sanitize::Config::OSM[:add_attributes] = { "a" => { "rel" => "nofollow" } }
-Sanitize::Config::OSM[:remove_contents] = %w(script style)
+Sanitize::Config::OSM[:elements] -= %w[div style]
+Sanitize::Config::OSM[:add_attributes] = { "a" => { "rel" => "nofollow noopener noreferrer" } }
+Sanitize::Config::OSM[:remove_contents] = %w[script style]