5 min read
What is a security control plane? Where security control is held or lost

A security control plane is where security control is enforced and measured. See the six planes in Expel's framework and how they differ from Kubernetes.

5 min read
What is an AI risk framework? Governance vs. security, explained

An AI risk framework organizes the risks of building or using AI. See how security and risk management frameworks differ, and when you need each one.

5 min read
What is security observability? The ability to explain what happened

Security observability is the ability to reconstruct and explain what happened, not just log it. See how it differs from monitoring and why AI breaks it.

7 min read
What is an attack surface in cybersecurity?

An attack surface is every entry point a cybercriminal could exploit—devices, accounts, apps, and connections. See the seven types and how to reduce yours.

5 min read
What is AI detection and response (AIDR)?

AI detection and response (AIDR) is Expel's emerging category for detecting AI-powered threats, agentic risk, and prompt attacks. See how it works.

5 min read
What is MITRE ATLAS? The framework for AI and ML threats

MITRE ATLAS maps how bad actors attack AI and machine learning systems. See the framework, its tactics, and how Expel labels detections against it.

4 min read
What is prompt poaching? How attackers steal AI prompts

Prompt poaching is the theft or reverse-engineering of a proprietary AI prompt. Learn how it happens, why it matters, and how to protect your prompts.

4 min read
What is prompt security? A guide for teams building on AI

Prompt security explained: how to protect AI prompts from injection, poaching, and misuse—plus how Expel's threat hunts cover it.

5 min read
What is shadow AI? Definition, risks, and examples

Shadow AI means employees use AI tools without IT or security approval. Learn the risks, real examples, and how Expel spots it in customer environments.

4 min read
Agentic AI security solutions: What to look for

Evaluating agentic AI security solutions? Get the 5 buying criteria, key vendor questions, and a comparison table before you commit to a platform.

7 min read
What are AI cyber attacks? How attackers use AI in 2026

AI cyber attacks use AI to automate, speed up, and adapt an intrusion. See the main types of AI attacks in 2026, real examples, and how to defend.

6 min read
What is a prompt injection attack?

A prompt injection attack hijacks AI systems by embedding malicious instructions in content they process. Learn how it works and how to defend against it.

7 min read
How does AI threat detection work?

AI threat detection uses machine learning and behavioral analytics to identify both known and novel attacks in real time.