Hi! Check out our Usenix 2021 paper on exactly this topic. The key insight is to release private keys over time: http://www.mit.edu/~specter/blog/2020/dkim/ ht

Hi! Check out our Usenix 2021 paper on exactly this topic. The key insight is to release private keys over time: http://www.mit.edu/~specter/blog/2020/dkim/ http://www.mit.edu/~specter/blog/2020/dkim/