Users advised not to use BIOSConnect for updating their BIOS
https://www.bleepingcomputer.com/news/security/dell-supportassist-bugs-put-over-30-million-pcs-at-risk/
Security researchers have found four major security vulnerabilities in the BIOSConnect feature of Dell SupportAssist, allowing attackers to remotely execute code within the BIOS of impacted devices.
According to Dell's website, the SupportAssist software is "preinstalled on most Dell devices running Windows operating system," while BIOSConnect provides remote firmware update and OS recovery features.