DigiCert Discloses Breach Exposing Identity Documents and Customer Data
A misconfigured server migration left an internal DigiCert system exposed to the internet, allowing unauthorized read-only access to customer contact…
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- Why Email Allow-Lists Fail: Auditing Overrides and Defending Against Domain Spoofing
- A Practical Guide to Setting Up Multi-Factor Authentication for Small Businesses
- How to Prevent Vulnerable Email Scripts and Stray Test Artifacts
CyberMap
An interactive map of 821 cybersecurity terms and how they connect — a visual glossary for learners.
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Scan API endpoints for injection, broken authentication, CORS and rate-limit problems, with a clear remediation report.
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What's happening in security right now
US Agencies Warn of Cyberattacks Targeting Industrial Refrigeration and Cold Chains
Federal authorities urge critical infrastructure operators to secure cold-chain controllers against attacks that can cause physical damage, inventory…
Data Breaches
Chainalysis Breach Exposes Credentials and Live Tokens for All Customers
Chainalysis has taken core platforms offline after discovering that a multi-front cyberattack exposed usernames, password hashes, and live tokens for…
Active Exploits and Emergency Fixes Pressure Teams Ahead of Patch Tuesday
IT administrators face widespread patching demands as active exploitation of PHP flaws and emergency updates for Microsoft and Apple precede November…
Learn & protect
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Guides to build your security skills
Blue Team & SOC
Why Email Allow-Lists Fail: Auditing Overrides and Defending Against Domain Spoofing
Overly broad email exceptions often bypass critical authentication checks. Learn how spoofed service domains slip past filters and how to safely audi…
A Practical Guide to Setting Up Multi-Factor Authentication for Small Businesses
A step-by-step roadmap for small business owners and IT administrators to deploy multi-factor authentication without disrupting daily operations.
Blue Team & SOC
How to Prevent Vulnerable Email Scripts and Stray Test Artifacts
Forgotten debug scripts and weak mail handlers expose servers to spam abuse and data leaks. Here is how to secure web email workflows and eliminate d…
Blue Team & SOCDefensive strategies and monitoring to stop threats early.
Cloud SecuritySecure AWS, Azure, Google Cloud and SaaS environments.
Ethical HackingTest systems responsibly to find and fix weaknesses.
LinuxCommand-line skills and hardening every defender needs.
Forensics & Incident ResponseInvestigate incidents and respond quickly.
NetworkingProtocols, ports and network defence fundamentals.
CyberMap
See how cybersecurity concepts connect
CyberMap is an interactive knowledge graph of 821 security terms and 2,083 connections. Click any concept to see its definition and related ideas — the fastest way to learn the language of security.
Term of the day
Cross-Certification
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Browse the glossary
Cross-certification is a process where two or more Certificate Authorities (CAs) mutually recognize each other's certificates. This allows users to trust certificates issued by different CAs without needing to explicitly trust each CA individually.
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