The absence of notifications regarding an ongoing RF jamming attack in the SecuritasHome home alarm system, version HPGW-G 0.0.2.23F BG_U-ITR-F1-BD_BL.A30.20181117, allows an attacker to block legitimate traffic while not alerting the owner of the system.
https://www.securitashome.se/product.html/securitashome
https://www.diva-portal.org/smash/get/diva2:1600180/FULLTEXT04.pdf