https://www.bleepingcomputer.com/news/security/silent-danger-one-in-five-aged-domains-is-malicious-risky-or-unsafe/

The number of malicious dormant domains is on the rise, and as researchers warn, roughly 22.3% of strategically aged domains pose some form of danger.

This was a realization that struck analysts when it was revealed that the SolarWinds threat actors relied on domains registered years before their malicious activities began.