Designed for secure in-vehicle networking, the CANsec Controller Core is a cutting-edge solution for enhancing the security aspects of Controller Area Network (CAN) communications. This core integrates cryptographic protocols to safeguard automotive data transmissions from potential cyber threats, ensuring privacy and data integrity. Apart from boosting security, it also maintains the legacy CAN protocol’s simplicity and robustness, making it suitable for a wide range of automotive applications. This flexibility allows automotive manufacturers to upgrade existing systems with state-of-the-art security without necessitating a complete redesign. The CANsec Controller Core exemplifies Fraunhofer IPMS’s innovative approach to intertwining security with traditional automotive frameworks, ultimately leading to more secure and trustworthy in-vehicle communication systems.