In "Ghost Fleet: A Novel of the Next World War", America's warfighting is crippled as the electronics that were manufactured in China contained backdoors that allowed them to shutdown or destroy the various computer systems.
The US military is already wary of this attack vector. Likewise, Australia was leery of letting the Chinese telco Huawei do any work on their National Broadband Network infrastructure.
Any idea how they mitigate it?
Probably by just limiting their contracts to sourcing only super-expensive US-military-contractor-manufactured milspec electronics.