How secure is ENS?

Could you elaborate on the security measures employed by the Ethereum Name Service (ENS)? Given the significance of domain names in the blockchain ecosystem, it's crucial to understand the robustness of its security infrastructure. Are there any known vulnerabilities or exploits that have been identified in ENS? What measures does the team take to mitigate potential risks and ensure the integrity of the system? Additionally, how frequently are security audits conducted, and what steps are taken to ensure that the latest security practices are implemented? Understanding these aspects would greatly assist in assessing the overall security posture of ENS.