How to Scan for Vulnerabilities in 2026
Learn the step-by-step process for scanning your infrastructure for security vulnerabilities using automated tools, CLI techniques, and scan orchestration.
·
10 min read
Metric Tower Blog
Practical guides on vulnerability scanning, security monitoring, and protecting your infrastructure.
Vulnerability Scanning
View all →Top 10 Vulnerability Scanning Tools Compared
A detailed comparison of the best vulnerability scanning tools in 2026, covering features, pricing, accuracy, real-world performance, and integration options.
·
12 min read
What Is Vulnerability Scanning and Why It Matters
Understand what vulnerability scanning is, how it works, the types of scans available, and why regular scanning is essential for protecting your organization.
·
8 min read
Port Scanning
View all →How to Scan for Open Ports Online
A practical guide to scanning for open ports on your servers and network devices using Nmap, online tools, and automated platforms with security best practices.
·
9 min read
Top 7 Port Scanning Tools for Security Professionals
Compare the leading port scanning tools used by security professionals in 2026, from Nmap and Naabu to modern cloud-based scanners with full automation.
·
11 min read
What Is Port Scanning? A Beginner's Guide
Learn what port scanning is, how different scan types work, which ports matter most, and how defenders use it proactively to secure network infrastructure.
·
7 min read
SSL Monitoring
View all →How to Monitor SSL Certificates
Set up automated SSL certificate monitoring to prevent expiry outages, detect misconfigurations, and maintain trust with your users across all your domains.
·
9 min read
Top 8 SSL Certificate Monitoring Tools
Review and compare the best SSL certificate monitoring tools available in 2026, covering expiry alerts, chain validation, protocol analysis, and pricing.
·
11 min read
What Is SSL Monitoring and Why You Need It
Discover why SSL monitoring is critical for website security, how certificate failures impact your business, and exactly what you should be monitoring.
·
7 min read
DNS Monitoring
View all →How to Monitor DNS Changes and Detect Hijacking
Learn how to set up DNS change monitoring to detect unauthorized modifications, prevent hijacking, and protect your domain integrity with automated alerts.
·
10 min read
Top 7 DNS Monitoring Tools Compared
A comprehensive comparison of DNS monitoring tools that track record changes, detect hijacking, alert on suspicious DNS activity, and monitor domain health.
·
11 min read
What Is DNS Monitoring?
Understand what DNS monitoring is, why DNS record changes matter for security, and how automated monitoring protects your domain from hijacking and threats.
·
7 min read
Uptime Monitoring
View all →How to Set Up Uptime Monitoring for Your Website
A complete guide to setting up uptime monitoring with HTTP, TCP, and heartbeat checks, alerting, status pages, and reporting to keep your website online.
·
9 min read
Top 10 Uptime Monitoring Tools in 2026
Compare the best uptime monitoring tools and services in 2026, covering check intervals, alerting integrations, status pages, and pricing across ten platforms.
·
12 min read
What Is Uptime Monitoring and Why It Matters
Learn what uptime monitoring is, how it works, the real cost of downtime, and why every business needs automated downtime detection and alerting in place.
·
7 min read
Web Security
View all →How to Check HTTP Security Headers
Step-by-step instructions for checking and configuring HTTP security headers including CSP, HSTS, X-Frame-Options, and Referrer-Policy on your web server.
·
9 min read
Top 8 Web Security Scanners
Evaluate the top web security scanners for finding XSS, SQL injection, misconfigurations, and other web application vulnerabilities in your infrastructure.
·
11 min read
What Are HTTP Security Headers? A Complete Guide
A complete reference to HTTP security headers explaining what each header does, the attacks it prevents, and how to configure them correctly on your server.
·
8 min read
Subdomain Discovery
View all →How to Find Subdomains of Any Domain
Master subdomain enumeration with passive and active techniques including CT logs, DNS brute-force, and permutation to discover your full attack surface.
·
10 min read
Top 7 Subdomain Enumeration Tools
Compare the best subdomain enumeration tools for security researchers, covering passive OSINT, active DNS brute-forcing, permutation, and automated pipelines.
·
11 min read
Phishing Simulation
View all →How to Run a Phishing Simulation Campaign
Plan and execute effective phishing simulation campaigns to test employee security awareness, measure click rates, and reduce social engineering risk at scale.
·
10 min read
Top 6 Phishing Simulation Platforms Compared
Review and compare the leading phishing simulation platforms for security awareness training, campaign management, auto-remediation, and reporting tools.
·
11 min read
API Security
View all →How to Test API Security
A practical guide to API security testing covering OWASP API Top 10 risks, authentication flaws, BOLA testing, injection attacks, and rate limiting checks.
·
10 min read
Top 7 API Security Testing Tools
Compare the best API security testing tools for discovering vulnerabilities in REST, GraphQL, and gRPC APIs with automation support and CI/CD integration.
·
11 min read
Asset Discovery
View all →How to Map Your Attack Surface
Learn how to identify and inventory all internet-facing assets in your organization using subdomain discovery, port scanning, and continuous monitoring.
·
10 min read
Top 8 Attack Surface Management Tools
Evaluate the leading attack surface management tools for continuous asset discovery, inventory, vulnerability scanning, and risk scoring of external assets.
·
11 min read