Results for “passwordless-authentication”

Deploys 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.

Implements Schnorr identification protocol and zero-knowledge password proof for authentication where the server never learns the user's password.

Implement Google's BeyondCorp zero trust access model to eliminate implicit trust from the network perimeter, enforce identity-aware access controls using IAP, Access Context Manager, and Chrome Enterprise Premium for VPN-less secure application access.

Configure Microsoft Entra ID (Azure AD) Conditional Access policies for zero trust access control, covering signal-based policy design, device compliance, risk-based authentication, named locations, session controls, and NIST SP 1800-35 integration.

API Security (Verbose)

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.

Test JWT signature verification bypass by crafting tokens with the 'none' algorithm.

Implements FIDO2/WebAuthn hardware security key authentication with registration, authentication, YubiKey enrollment, and passkey migration using the python-fido2 library.

Configure and execute agentless vulnerability scanning using network protocols, cloud snapshot analysis, and API-based discovery to assess systems without installing endpoint agents.

An API has no UI to hide things behind.

Authentication and credential security assessment. Tests password brute-force, credential stuffing, password spraying, default credential testing, credential harvesting, lockout analysis, MFA bypass, OAuth/OIDC abuse, session token entropy, Kerberos attacks, and intelligent wordlist generation. Uses hydra, john, ncrack, medusa, cewl, crunch, netexec, impacket, kerbrute, and nuclei default-login templates. Covers OWASP A07:2021 Identification and Authentication Failures.

Configure AWS Verified Access to provide VPN-less zero trust network access to internal applications using identity and device posture verification with Cedar policy language.

Modern authentication and security patterns for web applications. Expert in JWT tokens, OAuth2 flows, session management, RBAC, MFA, API security, and zero-trust architectures. Framework-agnostic patterns that work with any tech stack.

Exploit Active Directory environments using Pass-the-Hash (PtH). This skill details how to authenticate to remote systems using the NTLM hash of a user's password instead of the plaintext password, enabling lateral movement and privilege escalation without cracking hashes.

Authorized assessment of federated identity systems covering SAML, OIDC, and OAuth2 flows, SSO misconfigurations, and token confusion issues.

Detects anomalous authentication patterns using UEBA analytics, statistical baselines, and machine learning to identify impossible travel, credential stuffing, brute force, password spraying, and compromised account behaviors across authentication logs.

Deploy Cloudflare Access with Cloudflare Tunnel to provide zero trust access to self-hosted and private applications, configuring identity-aware access policies, device posture checks, and WARP client enrollment for VPN replacement.

Extract Kerberos tickets from LSASS memory, inject them into an attacker session, and perform lateral movement to access remote systems as the impersonated user.

Authorized security assessment of REST, GraphQL, WebSocket, and SOAP APIs covering discovery, authentication, authorization, rate-limiting, and CI/CD integration.

Execute OAuth 2.0 device-code and illicit-consent phishing attacks against Microsoft Entra ID to steal access and refresh tokens, bypass MFA, and pivot across Microsoft 365 services during authorized red-team engagements.

Deep OAuth 2.0 / OpenID Connect security assessment. Covers the full attack surface: redirect_uri validation bypass (path traversal, open redirect chains, subdomain confusion, URL parsing tricks, parameter pollution, response mode switching), missing/broken state parameter CSRF, PKCE downgrade and absent-challenge attacks, implicit grant token leakage (Referer, browser history, XSS fragment theft), authorization code injection, scope escalation, client confusion attacks, mutable-claims account takeover (iss+sub confusion, email-keyed identity merging), pre-account takeover via unverified registration, OpenID Connect dynamic client registration SSRF (logo_uri, jwks_uri, sector_identifier_uri, request_uri), nonce replay, ID token validation failures, Device Code phishing flow, mobile custom URI scheme hijacking, refresh token persistence, token introspection enumeration, consent screen clickjacking, host header injection, and cross-IdP mix-up attacks. Uses KOAuth, jwt_tool, nuclei oauth templates, and manual ht

Configure identity-aware proxies, micro-segmentation, and continuous verification to replace traditional VPN-based remote access with zero trust network access across AWS, Azure, and GCP.

Security Practices — Cryptographic Safety, Memory Zeroization & Hardened I/O

Implement JWT authentication, RBAC guards, Helmet hardening, and Argon2 hashing in NestJS. Use when adding auth strategies, role-based access control, CSRF protection, or security headers.

Complete guide for using pass, the standard Unix password manager, covering installation, GPG setup, store initialization, daily usage, git sync, extensions, and troubleshooting.

Implements Microsoft Entra ID authentication for React SPAs using MSAL.js and validates JWTs in Cloudflare Workers with jose, covering Authorization Code Flow with PKCE and common error fixes.