Upstream Security is the latest Israeli cybersecurity startup to focus on the automobile security arena (see here for others). Upstream claims to be the first to offer a cloud-based platform that detects and prevents large-scale attacks on connected and autonomous cars. Upstream just raised $2 million of funds.
http://www.globes.co.il/en/article-car-cyber-security-co-upstream-security-raises-2m-1001194094