BigShield Blog
Deep dives into email validation, fraud detection, and keeping fake signups out of your application. Written for developers and security teams.
BigShield vs Onsefy: 30+ Signals, Custom Rules, and What Actually Stops Fake Signups
A detailed comparison of BigShield and Onsefy for signup fraud prevention. We break down signal depth, custom rules, pricing, developer experience, and why 30+ validation layers matter more than a basic rules engine.
Mar 18, 2026
How to Stop Fake Signups: The Complete Guide for SaaS Teams
Fake signups cost SaaS companies thousands in wasted compute, polluted analytics, and support overhead. This is the definitive guide to detecting and blocking them, from basic email checks to multi-signal fraud scoring.
Mar 18, 2026
Catching Bot Behavior: Post-Signup Detection Techniques That Work
How to detect bots after they sign up by analyzing behavioral signals like mouse movement, typing patterns, page navigation, session analysis, and API usage patterns. Combine pre-signup and post-signup signals for stronger fraud detection.
Mar 17, 2026
Reduce Your OpenClaw Spend Without Sacrificing Quality
Practical tips for cutting your OpenClaw bill: pick the right model per task, keep your context window lean, and stop burning tokens on bots.
Mar 16, 2026
How to Stop Bot Emails From Signing Up (Complete 2026 Guide)
Bots use disposable emails, pattern-generated addresses, and credential farms to flood your signup form. Here are five proven methods to catch them all.
Mar 14, 2026
Real-Time Threat Intelligence: How to Build a Feed for Signup Fraud
How threat intelligence feeds work for email and signup fraud detection: data sources, update frequency, blocklist vs scoring approaches, and whether to build your own or use an existing service.
Mar 10, 2026
Architecture of a Fraud Detection Platform: How BigShield Works Under the Hood
A system design deep-dive into building a real-time fraud detection platform: tiered signal processing, scoring pipelines, Redis caching, BullMQ job queues, and database design for sub-200ms email validation.
Mar 3, 2026
Device Fingerprinting for Multi-Account Detection: A Technical Deep-Dive
A comprehensive technical guide to device fingerprinting techniques including canvas fingerprinting, WebGL, audio context, font enumeration, and how to use them for detecting multi-account fraud.
Feb 24, 2026
Detecting Coordinated Fraud Attacks: A Guide to Campaign Attribution
Learn how to identify coordinated signup fraud through timing analysis, shared infrastructure signals, campaign clustering, and attribution techniques that connect the dots between seemingly unrelated fake accounts.
Feb 17, 2026