10 Mar, 2026

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. The .arpa domain is a special top-level domain reserved for internet infrastructure rather than normal websites. It is used for reverse DNS lookups, which allow systems to map an […]

1 min read

Sitting Ducks DNS attacks let hackers hijack over 35,000 domains

Threat actors have hijacked more than 35,000 registered domains in so-called Sitting Ducks attacks that allow claiming a domain without having access to the owner’s account at the DNS provider or registrar. In a Sitting Ducks attack, cybercriminals exploit configuration shortcomings at the registrar level and insufficient ownership verification at DNS providers. Researchers at DNS-focused security vendor Infoblox […]

4 mins read