---
title: "Phuong Phung (@fuongz) | Hashnode"
description: "Software Engineer at Hiip. Read the latest articles by Phuong Phung on Hashnode."
url: "https://hashnode.com/@fuongz"
---

@fuongz

# Phuong Phung

@fuongz · Ho Chi Minh, Viet Nam · Joined October 2019

Software Engineer at Hiip

[Website](https://phuongphung.com/)

### [Securely Upload Files to S3 for Guests Using AWS Cognito](https://blog.phuongphung.com/aws-amplify-deploy-permissions?utm_source=hashnode&utm_medium=feed)

For security reasons, if you allow guest users to upload files from your app, it's better to use Guest Access from AWS Cognito instead of a direct AWS Access Key from an IAM User. Why? An IAM User access key is long-lived and never expires. With AW...

2 min read · [blog.phuongphung.com](https://blog.phuongphung.com/aws-amplify-deploy-permissions?utm_source=hashnode&utm_medium=feed)

[Jan 30](https://hashnode.com/posts/aws-amplify-deploy-permissions/697c3cafe47a2ecb11840ffd)