Legitimate uses are safe. However, be aware that this driver gives deep access to phone hardware; only use it with official firmware files from the device manufacturer.
No. MediaTek uses "MTK USB Drivers" and Exynos uses "Samsung USB Drivers." Installing Qualcomm drivers will not harm your PC, but your PC will not recognize a MediaTek device. qualcomm usb driver v1.0.exe
Advanced users and repair shops use tools like QPST Service Programming to read/write NV memory. Without this driver, the COM port will not appear. Legitimate uses are safe