Proposal to amend Table A1 of Annex 5 to include high level and sub-level descriptions of vulnerability and threat including spoofing of messages, Sybil attacks, communication channels permitting code injection, manipulation, overwrite and erasure of vehicle held data and code, denial of service attacks, unauthorized access to vehicle systems, viruses in communication media, and malicious messages, and amend Table B1 of Annex 5 to provide corresponding mitigation measures. This proposal is a further elaboration of TFCS-35-07.