United Healthcare impersonators are using an IPv6 trick to hide the real destination of phishing links in emails promising free Oral-B toothbrushes.

Net::CIDR versions before 0.24 for Perl mishandle leading zeros in IP CIDR addresses, which may have unspecified impact. The functions addr2cidr and cidrlookup may return leading zeros in a CIDR ...

A new phishing campaign abuses the .arpa TLD to host malicious content and hides its location via Cloudflare’s infrastructure.

A threat actor has found a new way to evade phishing detection defenses: Manipulate the .arpa top-level domain (TLD) and IPv6-to-IPv4 tunneling to host phishing content on domains that shouldn’t ...

Threat actors are abusing the special-use ".arpa" domain and IPv6 reverse DNS in phishing campaigns that more easily evade ...

PLANO, TX / ACCESS Newswire / March 6, 2026 / Intrusion Inc. (NASDAQ:INTZ) ("Intrusion" or the "Company"), a leader in ...

Learn how the internet works with a simple guide on DNS, IP addresses, and routing—explained clearly to show how online ...

New phishing attacks weaponize the internet’s backbone using .arpa domains and clever tricks to evade security systems ...

In a post on the Azure blog, Senior Program Manager Ganesh Srinivasan said that “IPv4 address space has been fully assigned in the United States, meaning there is no additional IPv4 address space ...

It traces its roots to ARPA, the Advanced Research Projects Agency, the United States' defence research body that funded the ...

Expansion of Sales Team to Support Customer Portfolio Growth PLANO, TX / ACCESS Newswire / February 10, 2026 / ...