How does a scheduled rollover help prevent key compromise?

How does a scheduled rollover help prevent key compromise?

DNSSEC uses several mathematical formulas (cryptography) to “sign” a zone. These signatures are subject to cryptanalysis. It is therefore possible for an attacker to learn the private key in a key pair even though that key has never been disclosed, either through “brute force” or other types of attacks. Every attack requires time to complete. Periodically changing the key decreases the length of time an attacker has to attempt the compromise.