Shodan is a search engine attackers use to find your forgotten servers and open databases. Here's how to search for your own company first, in 15 minutes.
SolarWinds, XZ Utils, dependency confusion, the 2025 npm token worms: how supply chain attacks work, each mapped to the exact defense that stops it.
A single anonymous request can dump an entire bucket — no exploit, no credential. Here's how object storage goes public across S3, Azure Blob, and GCS, and the account-level kill switch that shuts it down.
An open, unauthenticated MongoDB, Elasticsearch, Redis, Memcached, CouchDB, etcd, or Cassandra port is the cleanest CRITICAL in external security — full read, full delete, often host RCE, using the product's own commands. How attackers find them in seconds, and how to close them.
An open Redis port 6379 isn't a config nit for the backlog — it's a critical finding. Censys counted 39,405 unauthenticated instances, roughly half already showing compromise attempts, and Wiz's 2025 sweep found ~60,000. Here's the attacker playbook and a copy-pasteable hardening checklist.
A practical checklist for the six HTTP response headers that defend your site against clickjacking, MITM, XSS, and data leakage — with example values and the mistakes to avoid.
Every EASM vendor's homepage looks the same. Here's the framework we use to compare them honestly — what to ask, what to test, and what to ignore.
An exposed .env file at your web root is a credential dump waiting to be indexed. Here's why this keeps shipping to production and how to detect it.
A dangling CNAME pointing at a deprovisioned cloud service is a one-click takeover for whoever claims the resource next. Here's how it happens and how to catch it.
Every TLS certificate ever issued is logged in Certificate Transparency logs — including every subdomain. Here is how attackers use that for recon, what they find, and how to audit your own attack surface before they do.
Read any domain's DNS records like an infrastructure engineer. A, AAAA, MX, NS, TXT, CNAME, SOA — what each field reveals, what to look for, and where the security risks hide.
Everything you need to read, deploy, and monitor DMARC — the email authentication standard that decides whether spoofers can fake email from your domain. Real records, the migration playbook, and the eight-item checklist.
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