Security Advisories & Privacy Guides
Essential guidance on SMS verification security, preventing OTP hijacking, and mitigating fraud risks on public shared telecom lines.
Security Advisory
Public SMS Privacy & Security Guide
Comprehensive security analysis of temporary phone numbers, carrier encryption limits, and safe verification workflows.
Legal & Compliance
Terms of Service & Usage Policy
Terms governing public shared phone numbers, developer API quotas, acceptable use, and CTIA compliance.
Threat Analysis
Public Shared Number Risks: Advisory
Understand the critical confidentiality risks of shared temporary numbers and when to mandate dedicated private test lines.
Telecom Threat Model
SIM Swap vs SMS Interception Defense
Technical threat model comparing cellular SIM swap attacks against virtual long-code interception. Telecom security best practices.
CTIA Regulatory
CTIA Messaging Principles Compliance
Comprehensive developer guide to CTIA Messaging Principles, consumer consent, SHAFT content restrictions, and opt-out mechanics.
OpSec & Privacy
Disposable Virtual Numbers Guide
Compare burner phone apps with developer virtual inboxes. Privacy trade-offs, operational security, and telecom architecture.
Application Security
Preventing SMS Phishing & OTP Theft
How attackers steal one-time passcodes via reverse proxies (Evilginx) and social engineering, and how developers can harden login flows.
GDPR / Compliance
GDPR Compliance & Telecom Retention
How telecom platforms maintain GDPR compliance: cryptographic hashing, automated retention purges, and right-to-be-forgotten implementation.
Architecture / Telecom
Virtual Numbers vs eSIMs for Testing
Comprehensive engineering evaluation of virtual number APIs vs programmable cellular eSIMs for automated testing and identity verification.