Jonathan Brossard’s proof-of-concept tool can compromise the OS at boot by replacing the BIOS (Basic Input Output System) The backdoor can go as deep as the computer`s BIOS. It also writes an open source network boot firmware called iPXE to the computers network card. The attack can be carried out both locally (when the attacker has hands-on access to the machine), as well as remotely. Terminating the malware can be done only with the user manually reflashing every peripheral which requires dedicated equipment and professional know-how.”]