Hackers abuse .arpa DNS and ipv6 to evade phishing defenses

Threat actors are abusing the special-use “.arpa” domain and IPv6 reverse DNS in phishing campaigns that more easily evade domain reputation checks and email security gateways. […]

Source: https://www.bleepingcomputer.com/news/security/hackers-abuse-arpa-dns-and-ipv6-to-evade-phishing-defenses/