To be honest if you purchased a consumer grade Lenovo machine then malware is the least of your concerns. That thing will be a paper weight within a year.

They're like the "Gateway" laptops of yesteryear. Thinkpad is still "fine" but Lenovo's consumer stuff is utter junk of the highest order.

Source: Worked at a startup which purchased consumer laptops (shudder). Asus were "fine," Acer/Dell was "ok," Lenovo were horrifying, only being beaten by an unbranded laptop we had.

So I'd highly recommend avoiding Lenovo's stuff unless it is a Thinkpad.