---
id: 5668
title: "ERC-4337 paymasters: better UX, hidden risks"
source_domain: osec.io
source_url: "https://osec.io/blog/paymasters-evm/"
published_at: "2025-12-02T12:00:00Z"
tags: ["web3", "vulnerability-research", "smart-contracts", "ethereum", "erc-4337", "account-abstraction", "evm", "paymaster"]
phying_url: "https://phying.com/item/5668"
lang: en
---

# ERC-4337 paymasters: better UX, hidden risks

## Summary

OtterSec's guide to ERC-4337 paymasters: how account abstraction enables gasless UX, common pitfalls in real-world implementations, and best practices for production-ready designs.

## Intelligence Metadata

- **Sources:** osec.io
- **Published:** 2025-12-02T12:00:00Z
- **Original:** https://osec.io/blog/paymasters-evm/
- **Phying News:** https://phying.com/item/5668