PasskeyBridge blog

Engineering, security, and compliance notes from the PasskeyBridge team.

• Key Rotation Without Verification Gaps: Overlapping Validity Windows (2026-11-05)
• Carrier Signal Landscape 2027 (2026-11-02)
• Orbital Quantum Key Distribution: Micius, IRIS-2 and the Identity Use Case (2026-10-29)
• NYDFS 500.12 Evidence Pack: The Records Examiners Ask To See (2026-10-26)
• Signing at the Edge: JCS Canonicalization Pitfalls in Multi-Language Clients (2026-10-22)
• PCI DSS 4.0.1 Requirement 8.4.2: Phishing-Resistant MFA for Cardholder Data Environments (2026-10-19)
• 3GPP Release 19 NTN Security: The Satellite Becomes the Base Station (2026-10-15)
• NIS2 Identity Assurance: What Essential Entities Must Evidence in 2027 (2026-10-12)
• Idempotency Keys for Identity Webhooks: Exactly-Once Trust Decisions (2026-10-08)
• DORA Evidence Ownership: Who Assembles Each Register Field Before a Q1 Review (2026-10-05)
• Timing Side Channels at 550 km: What Orbital Latency Jitter Reveals and Hides (2026-10-01)
• An Identity Checklist for Agentic Commerce Pilots (2026-09-28)
• Pepper Custody: Where the Secret Behind Keyed Hashing Lives (2026-09-24)
• ReDoS in OpenID4VP Presentation Definitions (2026-09-14)
• Feeding a Hard Deny into Your Fraud Rules Engine: Integration Patterns (2026-09-11)
• The Pre-Filter Pattern: Paying for Heavy Fraud Signals Only on the Suspicious Tail (2026-09-07)
• Ground Truth for Space-Based Auth: Validating Doppler Challenges Against Public TLE Catalogs (2026-09-03)
• The PQC Inventory Your 2027 Audit Will Ask For (2026-08-31)
• CAEP in Production: Signed Outbound SETs and Receivers (2026-08-27)
• Benchmarking an Identity Verification API: Latency, Freshness, Failure Injection (2026-08-24)
• Anatomy of an A2A Handshake: How Two AI Agents Establish Trust Without a Shared Secret (2026-08-20)
• Six Contract Clauses That Test a “Zero PII” Claim (2026-08-17)
• Phone and Email Hashing: From Plain SHA-256 to HMAC-SHA-256 (2026-08-13)
• Carrier-State Checks for Credit Union and Bank Recovery (2026-08-10)
• ML-DSA in 2026: Three Security Headlines Examined (2026-08-08)
• Roaming Steering and Identity: HPLMN and VPLMN Trust (2026-07-31)
• Inter-Satellite Links as a Trust Mesh: Optical Cross-Links in LEO Constellations and Identity Routing (2026-07-27)
• The Identity Stack Bifurcation: Consumer Wallets vs Enterprise Attestation Layers (2026-07-23)
• mDoc and mDL Interoperability with W3C VC 2.0: Bridging the ISO 18013-5 and JSON-LD Worlds (2026-07-20)
• Multi-Region Active-Active Identity: Conflict-Free Replicated Trust State Across Three Continents (2026-07-17)
• DORA Article 28 and Third-Party ICT Risk for Identity Providers: The Subcontracting Chain (2026-07-13)
• Cryptographic Agility as a Protocol Property: Designing Identity Wire Formats That Survive Algorithm Deprecation (2026-07-10)
• Sub-Agent Trust Propagation in Multi-Tier Delegation (2026-07-06)
• 5G Standalone Network Slicing and Per-Slice Identity Posture (2026-07-03)
• HAPS and Stratospheric Backhaul: Identity Implications of 20km-Altitude Cell Towers (2026-07-01)
• IDV Margin Compression and Per-Verification Pricing (2026-06-29)
• OpenID4VP over the Digital Credentials API: Browser-Native Wallet Selection in Chrome and Safari (2026-06-26)
• Backpressure for Identity Pipelines: Verifiers Under DDoS (2026-06-22)
• NYDFS 23 NYCRR 500.12 and Continuous Authentication (2026-06-19)
• ML-DSA-87 and SLH-DSA-256 for Long-Lived Identity Assertions (2026-06-16)
• Just-in-Time Capability Tokens and Standing OAuth Scopes (2026-06-12)
• RCS Business Messaging as an Identity Channel: Verified Sender Telemetry Beyond A2P SMS (2026-06-08)
• The African Mobile Identity Leap: Carrier-First Identity in Markets Without Legacy IAM (2026-06-05)
• Credential Chaining: Deriving Trust from a Sequence of Issuer Attestations (2026-05-31)
• Cold-Start Latency in Serverless Identity Functions: Causes and Mitigations (2026-05-26)
• PCI DSS 4.0.1 and Identity Verification (2026-05-22)
• Quantum Key Distribution and Identity Systems (2026-05-18)
• Behavioral Fingerprinting for Agents: Detecting Model Substitution in Production Pipelines (2026-05-15)
• Carrier Signal Freshness: TTL and Signal Strength (2026-05-12)
• Identity Federation for Cislunar Operations: Extending Trust Beyond Earth Orbit (2026-05-08)
• Insurance Underwriting Meets Identity Assurance: Authentication Controls Applications Ask About (2026-05-04)
• Credential Revocation at Scale: Bitstring Status List vs Accumulator Proofs (2026-05-02)
• Event Sourcing for Identity State: CRUD and Trust Decisions (2026-04-29)
• SSF and CAEP: Closing the Cross-IdP Revocation Latency Gap (2026-04-28)
• DPoP Token Binding: Beyond Bearer Tokens in 2026 (2026-04-28)
• FedRAMP Authorization for Identity APIs: The Moderate Baseline and Carrier Signal Processing (2026-04-26)
• Stateful Hash-Based Signatures for Audit Logs: LMS and XMSS for One Signer (2026-04-24)
• The Liability Gap in Agentic Commerce: Responsibility When an Agent Commits Fraud (2026-04-22)
• eSIM Profile Switching as an Identity Signal, and as an Attack Surface (2026-04-20)
• Orbital Slot as Entropy Source: Harvesting Positional Uncertainty from Satellite Constellations (2026-04-18)
• Carrier Monetization of Identity Signals: GSMA Open Gateway and CAMARA (2026-04-16)
• DID Method Proliferation: did:web and Enterprise Adoption (2026-04-15)
• Circuit Breakers for Identity Pipelines: Graceful Degradation When a Carrier API Goes Dark (2026-04-13)
• Data Residency for Identity Signals: Navigating Schrems III and Cross-Border Carrier Lookups (2026-04-12)
• KEM for Identity Tokens in a Post-Quantum Auth Stack (2026-04-11)
• Agent Attestation Fatigue: When Too Many Trust Checks Become the Vulnerability (2026-04-10)
• Silent Number Recycling as a Carrier Signal (2026-04-09)
• Delay-Tolerant Identity: Authentication Protocols for ~480 ms Round-Trip Latency (2026-04-08)
• Identity Verification Platform Consolidation (2026-04-07)
• Selective Disclosure with SD-JWT: Claim Minimization (2026-04-06)
• Edge-First Identity Verification: Moving Carrier Signal Processing to the CDN Layer (2026-04-05)
• The EU Digital Identity Wallet and Carrier Signals: How eIDAS 2.0 Creates a New Compliance Surface (2026-04-04)
• Hybrid Signatures in Practice: Dual-Signing Identity Assertions with ES256 and ML-DSA (2026-04-03)
• Scope Poisoning: How Compromised Agents Escalate Privileges Through Delegation Chains (2026-04-02)
• Carrier Signal Chaining: Correlating Multi-IMSI Events Across Roaming Boundaries (2026-04-01)
• Starlink Direct-to-Cell Handoff and SIM Attestation (2026-03-31)
• Cross-Referencing SIM Signals with Verifiable Credentials (2026-03-30)
• SOC 2 Type II Audit Controls for Identity APIs (2026-03-29)
• Single-Provider Carrier Lookups Leave a Blind Spot (2026-03-28)
• QRNG vs. CSPRNG: The Entropy Identity Systems Need (2026-03-27)
• Verifiable Credentials Without a Blockchain (2026-03-26)
• Trust Decay Functions: The Mathematics of Agent Behavioral Drift (2026-03-25)
• SIM Swap Detection Latency: Carrier and Platform Gaps (2026-03-24)
• Designing an Identity Playbook Engine: From Signal to Action in One API Call (2026-03-23)
• Non-Terrestrial Trust Anchors for Identity (2026-03-22)
• Encrypted Tunnels in Identity: Beyond TLS (2026-03-21)
• A2A Trust Negotiation: How Two AI Agents Prove Identity to Each Other Without a Human (2026-03-20)
• The Identity Stack for Autonomous Commerce: When Your AI Agent Needs a Credit Line (2026-03-19)
• The CISO's Guide to Zero-PII Identity Verification in a Post-GDPR World (2026-03-18)
• Harvest Now, Decrypt Later: Identity Data Risk in 2026 (2026-03-17)
• Physics-Anchored Identity Settlement Tokens: Proof of Presence (2026-03-16)
• The Identity Threat Response Market in 2026 (2026-03-15)
• Passkeys Need a Carrier Signal Layer (2026-03-14)
• Identity From Orbit: How LEO Satellite Signals Could Replace Ground-Based Entropy (2026-03-14)
• The Zero-Knowledge Audit Trail: Proving Provenance Without PII (2026-03-13)
• A Trust Governor for Autonomous AI Agents (2026-03-11)
• The Invisible SIM-Swap: Carrier-Signal Variance as a Detector (2026-03-11)
• Post-Quantum Identity: NIST FIPS 204 and Your Auth Stack (2026-03-08)
• Identity and Device Physics: Spatially-Bound Attestation (2026-03-08)
• Building an Identity Threat Playbook in Under 10 Minutes (2026-03-07)
• Delegating Identity to AI Agents with Trust-Scored Scopes (2026-03-06)
• Reg S-ID Compliance Without Storing Phone Numbers (2026-03-05)
• After SIM-Swap Detection: The Response Window (2026-03-04)
• Agentic Identity: Scoped Digital Delegates for AI Agents (2026-03-02)
• SIM-Swap Detection on Its Own (2026-03-01)
• Introducing PasskeyBridge: Identity Security as a Service (2026-03-01)
• Building a Zero-PII Audit Trail (2026-02-28)
• SOC 2 Readiness for Identity Startups in 2026 (2026-02-25)
• The Carrier Signal Landscape in 2026 (2026-02-20)