Knowledge Base
Showing 24 of 362 guides. Use the numbered pages to browse the complete archive.
Supervisory refrigeration controllers are small Linux web servers with authority over compressors, defrost cycles and alarms. Here is what an attacker gets from one, and why.
Refrigeration, HVAC and lighting controllers get internet access through contractor modems and router port-forwards IT never sees. A practical discovery and lockdown sequence.
Retailers own the refrigeration, contractors hold the remote access, and nobody owns the security of the join. How to put third-party OT access under contract and under monitoring.
Remember-me cookies on a VPN gateway are bearer tokens with the full power of a login. Here is what they protect, what they depend on, and how CVE-2026-0257 broke the integrity half.
An auth bypass leaves one successful login and no failures. Pivot on authentication method, source ASN, client hostname and lease patterns, then follow every hit inward.
A patch closes the door. Sessions, credentials and remote-access tools acquired while it was open survive it. Make session termination and a vulnerable-window hunt part of every perimeter fix.
A signed driver proves who wrote the code, not that it is safe. Bring-your-own-vulnerable-driver loads a legitimate but flawed driver to get from admin access into the Windows kernel.
Modern miners evade Task Manager by design. Hunt on process lineage, service persistence and outbound connections instead of the one tool the malware is built to watch for.
A backup server holds a copy of everything, credentials to every system it protects, and the recovery option ransomware must destroy. Treat it like a domain controller.
A CI workflow is a privileged insider: it can read your named secrets, any credential on disk, and every secret ever committed to your git history.
A deleted credential still lives in your commit history. Enumerate it, revoke it at the source first, then rewrite history and add push protection to keep it out.
Rotation cleans up each leak; short-lived identity-based credentials make leaks cheap. OIDC, approval gates and egress control shrink what a stolen workflow can take.
State-aligned intrusion crews now run like factory lines: a botnet finds hosts, a scanner fingerprints them, and old, reliable exploits do the rest.
Credential replication and bulk email collection both abuse legitimate protocols, so detection means baselining normal activity and alerting on the exceptions.
A KEV listing on a decade-old CVE is a hunting assignment, not a patching one: you must prove no forgotten or embedded instance of the vulnerable service still runs.
HA database managers expose failover, restart, reinitialize and config rewrite over HTTP, and often ship with auth off. Why that API is a code-execution surface, using Patroni's own docs as the guide.
Bundled sidecars and helper daemons open listeners the install guide never mentioned, sometimes on random ports. A six-step process to inventory them, pin them, decide their audience and enforce it.
A compromised search head hands over every stored credential, every detection rule and the power to erase the evidence. Why the SIEM belongs on the domain-controller patch clock, and what changes.
An arbitrary file read is only as dangerous as your worst secret. How a read-only bug pivots through plaintext credentials in a config file to full admin, and what actually breaks the chain.
Patching closes the hole; it does nothing about the credentials that leaked while it was open. A runbook for scoping the exposure and rotating secrets in dependency order without locking yourself out.
When one bug lands in eight products, they shared a library. Why the headline product is the patching trap, why inventory is the real control, and how to scope a response to the component.
Update tools run as root, write files from the network and trust the paths inside what they download. Why that makes a mundane traversal bug a full operating-system compromise.
Building an internal mirror for firmware catalogs and vendor tooling: staging versus serving, write access as a tier-0 permission, signature checks on ingest and egress rules that prove it.
Release importance ratings answer a product question, not a security one. How the silent-fix window works, which releases deserve suspicion, and how to patch without trusting the label.