Find out more about Certificate Revocation Lists (CRL) generated by a Certificate Authority, their value for cybersecurity, as well as their disadvantages and possible solutions. Learn about a certificate revocation list, a blocklist of digital certificates deemed untrustworthy, how they work and why they're important for security. Crown-rump length (CRL) is the measurement of the length of human embryos and fetuses from the top of the head (crown) to the bottom of the buttocks (rump). It is typically determined from ultrasound imagery and can be used to estimate gestational age. Learn what a Certificate Revocation List (CRL) is and how it safeguards online security by managing revoked certificates effectively.