PSAA key terms
PSAA · Get comfortable with the vocabulary.
- Prompt injection
- Related: Jailbreak, Indirect prompt injection, Guardrails
An attack where untrusted input, such as a web page or document, contains instructions that cause a large language model to ignore its original directives and act on the attacker's intent.
- Indirect prompt injection
- Related: Prompt injection, Retrieval-augmented generation, Tool use
A prompt injection delivered through content the model retrieves or processes rather than through the user's own message, such as a poisoned document, email, or web page that carries hidden instructions.
- Jailbreak
- Related: Prompt injection, Guardrails, Model alignment
A technique that bypasses a model's safety alignment so it produces content its policy forbids, typically by role-play framing, encoding tricks, or multi-turn persuasion rather than by injecting external content.
- Guardrails
- Related: Prompt injection, Output filtering, Human-in-the-loop approval
Controls placed around a model's input and output to enforce policy, such as content classifiers, schema validation, allow-lists for tools, and blocking of sensitive data patterns before a response is returned.
- Retrieval-augmented generation
- Related: Indirect prompt injection, Data poisoning, Vector database
An architecture where a model is given relevant documents fetched from a search index at query time so answers are grounded in current or private data instead of only pretrained knowledge.
- Data poisoning
- Related: Retrieval-augmented generation, Model supply chain, Vector database
Tampering with training or retrieval data so a model learns wrong associations or surfaces attacker-chosen content, which can later trigger biased answers or malicious actions.
- Model supply chain risk
- Related: Data poisoning, Model card, Software bill of materials
Exposure created by using third-party models, weights, plugins, or datasets whose provenance, licensing, and integrity are not fully verified, allowing hidden backdoors or unsafe behavior.
- Tool use
- Related: Indirect prompt injection, Excessive agency, Human-in-the-loop approval
A capability where a model calls external functions or APIs to act on the world, which expands its reach and makes authorization, input validation, and least privilege essential.
- Excessive agency
- Related: Tool use, Least privilege, Human-in-the-loop approval
A failure mode where an AI agent is granted permissions, tools, or autonomy beyond what its task requires, so a manipulated or mistaken decision can cause disproportionate harm.
- Human-in-the-loop approval
- Related: Excessive agency, Guardrails, Tool use
A control requiring a person to review and authorize a high-impact action proposed by an automated system before it executes, limiting damage from errors or manipulation.
- Zero trust
- Related: Microsegmentation, SASE, Least privilege
A security model that treats no network location as inherently trusted and instead verifies identity and device posture for every request before granting access to a resource.
- Microsegmentation
- Related: Zero trust, Least privilege, East-west traffic
Dividing a network into small zones with granular allow rules so workloads can reach only the specific peers they need, containing lateral movement after a compromise.
- East-west traffic
- Related: Microsegmentation, Lateral movement
Network flows between internal hosts or workloads inside a data center, as opposed to client-to-server north-south traffic, and a common path for lateral movement.
- Lateral movement
- Related: East-west traffic, Microsegmentation, Credential theft
The techniques an attacker uses after initial access to move from one compromised host to others, escalating privileges and expanding control across the environment.
- Intrusion detection system
- Related: East-west traffic, Security information and event management, False positive
A sensor that inspects network or host activity against signatures or behavioral baselines and raises alerts on suspicious patterns, either passively or inline to block.
- SASE
- Related: Zero trust network access, Secure web gateway, CASB
Secure Access Service Edge converges network connectivity such as SD-WAN with cloud-delivered security services like secure web gateway, CASB, and zero trust network access in one policy-managed fabric.
- Zero trust network access
- Related: SASE, Zero trust, Identity provider
A service that grants users access to individual private applications after identity and device checks, without placing them on the broader corporate network.
- Secure web gateway
- Related: SASE, TLS inspection, CASB
A proxy that inspects and filters outbound web traffic, enforcing acceptable-use policy, blocking malicious sites, and applying data controls such as TLS inspection and file scanning.
- CASB
- Related: SASE, Shadow IT, Data loss prevention
A cloud access security broker sits between users and cloud services to discover shadow IT, enforce usage policy, and apply data loss prevention and access controls to SaaS applications.
- TLS inspection
- Related: Secure web gateway, Data loss prevention
A gateway technique that terminates and re-establishes encrypted sessions so traffic can be examined, requiring certificate trust on endpoints and careful handling of privacy and pinned applications.
- Shadow IT
- Related: CASB, Data loss prevention
Cloud services and applications adopted by employees without IT approval, creating unmanaged data stores and blind spots that discovery tools and policy enforcement aim to surface.
- Security information and event management
- Related: SIEM ingestion, Detection rule, False positive
A platform that centralizes logs from many sources, correlates events against detection rules, and alerts analysts, forming the data backbone of a security operations center.
- Detection rule
- Related: Security information and event management, False positive, MITRE ATT&CK
Logic that specifies which event patterns should raise an alert, expressed as signatures, correlation sequences, or behavioral thresholds, and tuned to balance coverage against noise.
- MITRE ATT&CK
- Related: Detection rule, Threat hunting, Indicator of compromise
A public knowledge base of adversary tactics and techniques observed in real intrusions, used to organize detections, plan threat hunting, and measure defensive coverage gaps.
- Threat hunting
- Related: MITRE ATT&CK, Indicator of compromise, Security information and event management
Proactive, hypothesis-driven searching through telemetry for signs of compromise that existing alerts missed, rather than waiting for a detection to fire.
- Indicator of compromise
- Related: Threat hunting, MITRE ATT&CK
An observable artifact such as a file hash, domain, or IP address associated with known malicious activity, useful for matching but easily changed by attackers.
- False positive
- Related: Detection rule, Security information and event management, Playbook
An alert raised on benign activity, which consumes analyst time and erodes trust in detection; tuning reduces these while preserving true detections.
- Playbook
- Related: SOAR, False positive, Incident response
A documented, repeatable sequence of steps an analyst or automation follows to triage and respond to a specific alert type, encoding decisions and escalation criteria.
- SOAR
- Related: Playbook, Incident response
Security orchestration, automation, and response tooling chains together systems and executes playbooks automatically, handling repetitive triage and enrichment tasks to speed response.
- Shared responsibility model
- Related: Misconfiguration, Cloud security posture management, Identity provider
The division of security duties between a cloud provider and its customer, where the provider secures the underlying infrastructure and the customer secures data, identities, and configuration.
- Misconfiguration
- Related: Shared responsibility model, Cloud security posture management, Least privilege
An insecure setting in a cloud or application service, such as a public storage bucket or overly broad role, that exposes data without requiring an exploit.
- Cloud security posture management
- Related: Misconfiguration, Shared responsibility model, Infrastructure as code scanning
A tool that continuously scans cloud accounts against benchmarks and policy, flagging risky configurations and drift and often offering automated remediation.
- Infrastructure as code scanning
- Related: Cloud security posture management, Misconfiguration
Static analysis of declarative templates such as Terraform or Kubernetes manifests before deployment, catching insecure resource settings early in the pipeline rather than in production.
- Observability
- Related: Distributed tracing, Mean time to remediate, Log retention
The ability to understand a system's internal state from its outputs, combining logs, metrics, and traces so teams can diagnose failures and spot anomalous behavior.
- Distributed tracing
- Related: Observability, Log retention
Instrumentation that follows a single request across services using shared trace identifiers, revealing where latency or errors originate in a multi-service architecture.
- Mean time to remediate
- Related: Observability, Playbook, Incident response
The average elapsed time from detecting an issue to fully fixing it, a key measure of response effectiveness that complements detection-focused metrics.
- Log retention
- Related: Observability, Security information and event management
The policy defining how long telemetry is stored and at what fidelity, balancing investigation and compliance needs against cost and privacy obligations.
- Identity provider
- Related: SSO, MFA, Conditional access
A service that authenticates users and issues assertions or tokens about their identity to relying applications, centralizing credential checks and enabling single sign-on.
- SSO
- Related: Identity provider, MFA, Conditional access
Single sign-on lets a user authenticate once with a central identity provider and reach many applications without separate credentials, reducing password sprawl and phishing surface.
- MFA
- Related: Identity provider, Phishing-resistant authentication, MFA fatigue
Multi-factor authentication requires two or more independent evidence types, such as a password plus a hardware key or push approval, making stolen passwords far less useful.
- Phishing-resistant authentication
- Related: MFA, MFA fatigue
Credential methods bound to the legitimate service origin, such as passkeys or FIDO hardware keys, which cannot be replayed against a lookalike site by an attacker.
- MFA fatigue
- Related: MFA, Phishing-resistant authentication
An attack that bombards a user with push notifications until they approve one, or that pairs a stolen password with a single well-timed prompt to gain access.
- Conditional access
- Related: Identity provider, Zero trust, Least privilege
Policy that grants or blocks access based on context such as user role, device compliance, location, and risk level, evaluated at each sign-in and session.
- Least privilege
- Related: Conditional access, Excessive agency, Microsegmentation
Granting only the permissions needed for a task and only for as long as needed, limiting the blast radius if an account or workload is compromised.