Fake E-Mail Bomb Threats
https://www.cnn.com/2018/12/13/us/email-bomb-threats/index.html
Phishing Via Non-Delivery Notices
https://isc.sans.edu/forums/diary/Phishing+Attack+Through+NonDelivery+Notification/24412/
LamePyre MacOS Malware
https://blog.malwarebytes.com/detections/osx-lamepyre/