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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. [...]
A newly discovered phishing-as-a-service (PhaaS) operation that researchers call Morphing Meerkat, has been using the DNS over HTTPS (DoH) protocol to evade detection. [...]
Threat actors are using Domain Name System (DNS) tunneling to track when their targets open phishing emails and click on malicious links, and to scan networks for potential vulnerabilities. [...]