DNS

An open DNS zone transfer hands attackers a map of your network in one query. Here's what it reveals, and how Red Sift ASM keeps your organization safe.

Dangling DNS: how to find and fix it before takeover

Jul 20, 20267 min readBilly McDiarmid

Dangling DNS is easy to create and hard to spot. OWASP and AWS both flag it. Here's the risk, what each says, and how to find and fix it across your estate.

NIST DNS update: What this means for your organization

Mar 25, 20265 min read

NIST SP 800-81 Revision 3 reframes DNS as an active security layer for the first time since 2013. Here's what changed and why it matters for DMARC, SPF, and DKIM.

4 free tools for quick email security testing

Dec 1, 20254 min readJack Lilley

Four free tools from Red Sift to audit your email authentication in minutes: Investigate for DMARC, SPF Checker, BIMI Checker, and Blacklist Checker.

How open zone transfers expose your internal network

Dangling DNS: how to find and fix it before takeover

NIST DNS update: What this means for your organization

4 free tools for quick email security testing