Last October 2020, researchers at US security company AdvIntel discovered that one of the Internet’s most troublesome malware platforms, Trickbot, had started testing something rather threatening: probing UEFI firmware chips inside targeted PCs to see whether they were vulnerable to known firmware vulnerabilities. This was only reconnaissance, Trickbot was not infecting the SPI flash chip on which UEFI firmware resides, but the discovery is significant.
UEFI (Unified Extensible Firmware Interfa
