implementing-end-to-end-encryption-for-messaging
End-to-end encryption (E2EE) ensures that only the communicating parties can read messages, with no intermediary (including the server) able to decrypt them. This skill implements a simplified version
End-to-end encryption (E2EE) ensures that only the communicating parties can read messages, with no intermediary (including the server) able to decrypt them. This skill implements a simplified version
Implement GCP Binary Authorization to enforce deploy-time security controls that ensure only trusted, attested container images are deployed to Google Kubernetes Engine and Cloud Run.
Implements comprehensive Google Workspace security hardening including admin console configuration, phishing-resistant MFA enforcement, DLP policies, email authentication (SPF/DKIM/DMARC), OAuth app control, and external sharing restrictions. Activates for requests involving Google Workspace hardening, G Suite security configuration, or cloud office security administration.
Configure Google Workspace advanced phishing and malware protection settings including pre-delivery scanning, attachment protection, spoofing detection, and Enhanced Safe Browsing.
Configure SAML 2.0 single sign-on for Google Workspace with a third-party identity provider, enabling centralized authentication and enforcing organization-wide access policies.
Implements FIDO2/WebAuthn hardware security key authentication including registration ceremonies, authentication flows, YubiKey enrollment, and passkey migration strategies. Builds a complete relying party server using the python-fido2 library that supports cross-platform authenticators, resident key (discoverable credential) workflows, and user verification policies. Activates for requests involving FIDO2 implementation, WebAuthn registration, hardware security key enrollment, YubiKey integration, or passkey migration from password-based authentication.
Implements HashiCorp Vault dynamic secrets engines for database credentials, AWS IAM keys, and PKI certificates with automatic generation, lease management, and credential rotation to eliminate static secrets in application configurations. Activates for requests involving Vault secrets engine configuration, dynamic database credentials, ephemeral cloud credentials, or automated secret rotation.
Deploys canary tokens and honeytokens (fake AWS credentials, DNS canaries, document beacons, database records) that trigger alerts when accessed by attackers. Uses the Canarytokens API and custom webhook integrations for breach detection. Use when building deception-based early warning systems for intrusion detection.
Deploy and configure Tofino industrial firewalls from Belden/Hirschmann to protect SCADA systems and PLCs using deep packet inspection for OT protocols including Modbus, EtherNet/IP, OPC, and S7comm, enforcing granular access control between ICS security zones.
Deploy SailPoint IdentityNow or IdentityIQ for identity governance and administration. Covers identity lifecycle management, access request workflows, certification campaigns, role mining, SOD policy
Implement continuous identity verification for zero trust using phishing-resistant MFA (FIDO2/WebAuthn), risk-based conditional access, and identity governance aligned with the CISA Zero Trust Maturity Model.
Sign and verify container image provenance using Sigstore Cosign with keyless OIDC-based signing, attestations, and Kubernetes admission enforcement.
Implements immutable backup strategy using restic with S3-compatible storage and object lock for ransomware-resistant data protection. Automates backup creation, integrity verification via restic check --read-data, snapshot retention policy enforcement, and restore testing. Integrates with AWS S3 Object Lock, MinIO, and Backblaze B2 for WORM (Write Once Read Many) storage that prevents backup deletion or encryption by ransomware actors.
JSON Web Tokens (JWT) defined in RFC 7519 are compact, URL-safe tokens used for authentication and authorization in web applications. This skill covers implementing secure JWT signing with HMAC-SHA256
Implements input and output validation guardrails for LLM-powered applications to prevent prompt injection, data leakage, toxic content generation, and hallucinated outputs. Builds a security validation pipeline using NVIDIA NeMo Guardrails Colang definitions, custom Python validators for PII detection and content policy enforcement, and the Guardrails AI framework for structured output validation. The guardrails system intercepts both user inputs (blocking injection attempts, stripping PII, enforcing topic boundaries) and model outputs (detecting hallucinations, filtering toxic content, validating JSON schema compliance). Activates for requests involving LLM output validation, AI content filtering, guardrail implementation, or LLM safety enforcement.
Build an append-only log integrity chain using SHA-256 hash chaining for tamper detection. Each log entry is hashed with the previous entry's hash to create a blockchain-like structure where modifying any entry invalidates all subsequent hashes. Implements log ingestion, chain verification, tamper detection with pinpoint identification, and periodic checkpoint anchoring to external timestamping services.
Deploy Mimecast Targeted Threat Protection including URL Protect, Attachment Protect, Impersonation Protect, and Internal Email Protect to defend against advanced phishing and spearphishing attacks.
Configures mutual TLS (mTLS) authentication between microservices using Python cryptography library for certificate generation and ssl module for TLS verification. Validates certificate chains, checks expiration, and audits mTLS deployment status. Use when implementing zero-trust service-to-service authentication.
This skill covers implementing North American Electric Reliability Corporation Critical Infrastructure Protection (NERC CIP) compliance controls for Bulk Electric System (BES) cyber systems. It addresses asset categorization (CIP-002), electronic security perimeters (CIP-005), system security management (CIP-007), configuration management (CIP-010), supply chain risk management (CIP-013), and the 2025 updates including mandatory MFA for remote access and expanded low-impact asset requirements.
Implements 802.1X port-based network access control using RADIUS authentication, PacketFence NAC, and switch configurations to enforce identity-based access policies, posture assessment, and automatic VLAN assignment for authorized devices.
Deploy Cisco Identity Services Engine for 802.1X wired and wireless authentication, MAC Authentication Bypass, posture assessment, and dynamic VLAN assignment for network access control.
Configure and deploy Palo Alto Networks next-generation firewalls with App-ID, User-ID, zone-based policies, SSL decryption, and threat prevention profiles for enterprise network security.
Implements passwordless authentication using Microsoft Entra ID with FIDO2 security keys, Windows Hello for Business, Microsoft Authenticator passkeys, and certificate-based authentication to eliminate password-based attacks. Activates for requests involving passwordless deployment, FIDO2 passkey configuration, phishing-resistant MFA, or Microsoft Entra authentication method policies.
Deploy FIDO2/WebAuthn passwordless authentication using security keys and platform authenticators. Covers WebAuthn API integration, FIDO2 server configuration, passkey enrollment, biometric authentica