They had a Chinese back door in the firmware. Don’t know if that’s still the case. techworm.net/…/lenovo-pcs-and-laptops-seem-to-hav… They’ve had several major (intentional) security flaws over the years. en.m.wikipedia.org/wiki/Lenovo They had a modified UEFI that allows insecure execution of EXEs. The Lenovo laptops given to US military in Iraq had keyloggers that sent all inputs back to China.