The videos from BlackHat-US-2019 are on Youtube now:
https://twitter.com/BlackHatEvents/status/1205203178431619072
https://www.blackhat.com/us-19/briefings/schedule/
For example:
The videos from BlackHat-US-2019 are on Youtube now:
https://twitter.com/BlackHatEvents/status/1205203178431619072
https://www.blackhat.com/us-19/briefings/schedule/
For example: