Building an E2EE Chat App in Flask - Part 3: Keeping File Uploads Safe
The article discusses the importance of securing file uploads in an end-to-end encrypted chat application built with Flask. It outlines the potential risks associated with user-uploaded files and presents a systematic approach to mitigate these risks. Key strategies include whitelisting allowed file types, sanitizing filenames, and organizing files by type to enhance security.
- ▪Users can upload potentially harmful files, including viruses and oversized files that could disrupt the application.
- ▪The author implemented checks to only accept specific file types, such as images and videos, while rejecting unsafe formats.
- ▪Filename sanitization is performed to prevent attackers from exploiting file paths to access sensitive areas of the system.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3933233) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Avash Karn Posted on May 23 Building an E2EE Chat App in Flask - Part 3: Keeping File Uploads Safe #python #security #tutorial #webdev E2EE chat (3 Part Series) 1 Building an E2EE Chat App in Flask - Part 1: Why Encryption Matters 2 Building an E2EE Chat App in Flask - Part 2: Secure Password Storage 3 Building an E2EE Chat App in Flask - Part 3: Keeping File Uploads Safe Okay hi, so imagine you have a mailbox at your house.
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