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Insights & Research
Security Blog
Expert analysis on DNS security, TLS configuration, email authentication, and security posture monitoring — from the CyberShield team.
aiAI-Powered Phishing: Why Email Authentication Is Your First Defense
AI-generated phishing emails are increasingly sophisticated, personalized, and difficult to detect. Learn why technical email authentication controls (SPF, DKIM, DMARC) are more important than ever as AI eliminates the traditional warning signs.
CyberShield Team
9 min read
certificate-transparencyUsing Certificate Transparency Logs to Detect Brand Impersonation
Certificate Transparency logs record every publicly trusted TLS certificate issued. Learn how to monitor CT logs to detect typosquatting, phishing domains, and unauthorized certificates targeting your brand.
CyberShield Team
9 min read
dnsDNS Privacy: DoH, DoT, and DNSSEC Compared
DNS queries reveal every site you visit, making DNS privacy a growing concern. Compare DNS over HTTPS (DoH), DNS over TLS (DoT), and DNSSEC to understand what each protects against and how they work together.
CyberShield Team
10 min read
tlsEnd-of-Life TLS: The Hidden Risk in Your Domain Configuration
Legacy TLS 1.0, TLS 1.1, and weak cipher suites persist across the internet despite formal deprecation. Learn why end-of-life TLS configurations remain dangerous, how to identify them, and how to migrate safely.
CyberShield Team
9 min read
dmarcGoogle and Microsoft Now Require DMARC: What You Need to Do
Google and Microsoft have made DMARC authentication mandatory for bulk senders. With only 18% of domains fully compliant, most organizations need to act now. Learn the requirements, timelines, and how to achieve compliance.
CyberShield Team
11 min read
post-quantumPost-Quantum Cryptography: Is Your TLS Quantum-Safe?
NIST has finalized its first post-quantum cryptographic standards. With quantum computers threatening current encryption, organizations need to assess their TLS configurations now. Learn what post-quantum cryptography means for your external security.
CyberShield Team
9 min read
becPreventing Business Email Compromise (BEC): Technical Defenses That Work
Business email compromise costs organizations billions annually. Learn how SPF, DKIM, DMARC, and other technical controls prevent the email spoofing and impersonation that make BEC attacks possible.
CyberShield Team
9 min read
misconfigurationSecurity Misconfiguration: The #1 Finding in External Scans
Security misconfiguration consistently tops the list of findings in external security assessments. From missing headers to exposed services, learn what the most common misconfigurations are, why they persist, and how to fix them systematically.
CyberShield Team
9 min read
cyber-insuranceHow Security Ratings Affect Your Cyber Insurance Premiums
Cyber insurers increasingly use external security ratings to evaluate risk and set premiums. Learn what insurers look for, how your security posture score impacts your coverage, and practical steps to reduce your premiums.
CyberShield Team
9 min read
shadow-itShadow IT: Finding Your Unknown Internet-Facing Assets
Over half of SaaS applications used by organizations are adopted without security team involvement. Learn how external scanning, DNS enumeration, and certificate transparency monitoring discover the internet-facing assets you do not know about.
CyberShield Team
8 min read
tlsShort-Lived TLS Certificates: What the 47-Day Revolution Means for Your Security
The CA/Browser Forum has approved a dramatic reduction in TLS certificate lifespans from 398 days to just 47 days by 2029. Learn what this means for your certificate management, automation strategy, and how to prepare your infrastructure.
CyberShield Team
9 min read
small-businessThe Small Business Guide to External Security Assessment
Small businesses are the primary target for cyberattacks, yet most lack visibility into their external security posture. This guide covers the five critical checks every SMB should run, how to interpret results, and practical steps to harden your perimeter.
CyberShield Team
11 min read