is it possible to throttle down an all-port scan rate specifically for sensitive devices? ie via separate profile?
Option Profiles have a specific setting that allows you to control the performance (intensity) of the scan. You'll find this under Scans > Options Profiles > New > Scan > Performance
For your sensitive devices, you may create a separate profile with low performance setting.
More information on this here: https://qualysguard.qualys.com/qwebhelp/fo_portal/option_profiles/win_configure_scan_performance.htm
And in this video: https://vimeo.com/album/4948215/video/252606910
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