Abusing .arpa: The TLD That Isn’t Supposed to Host Anything
Threat actors are exploiting the .arpa top-level domain (TLD), typically not meant for hosting content, to conduct phishing attacks. By using IPv6 tunnels, they create malicious domains that bypass security controls. These phishing campaigns employ tricks like embedding hyperlinks in images, leading victims to malicious sites through a series of redirects. The attack involves manipulating DNS record management to host phishing content, taking advantage of the .arpa domain’s trusted nature. This novel exploitation complicates detection since these domains appear legitimate and are often unblocked by security policies.
