404 Media is an online, independent, reporter-owned news publication that focuses on technology and internet reporting. It covers topics such as artificial intelligence, hacking, sex work, niche online communities, and the right-to-repair movement. Owned by its reporters, it received an EFF Pioneer Award in 2024.

404 Media was founded in 2023 by former staff members of Vice Media's Motherboard after Vice filed for bankruptcy. Its founding members were former editor-in-chief Jason Koebler, former senior editors Emanuel Maiberg and Sam Cole, and former writer Joseph Cox. Fast Company summarized the outlet's creation as "a spartan setup consisting of a Stripe account and the Ghost web-hosting platform".

In November 2024, 404 Media entered an agreement with Wired to co-publish two articles a month on the magazine's website.

404 Media is reporter-owned, a model inspired by organizations such as Defector Media and Hell Gate. The company offers paid subscription plans at several tiers, with a base subscription costing $10 monthly or $100 annually.

In January 2024, the publication began requiring email addresses to deter artificial intelligence article spinners from scraping its content to publish on other websites.

In February 2024, 404 Media was reported to be profitable.

In January 2024, 404 Media reported that AI-generated rewrites of its articles appeared on spam websites, with some prioritized over the original article on Google Search.

Also in January 2024, a 404 Media investigation discovered that images in the Taylor Swift deepfake pornography controversy originated from the website 4chan and were distributed via the Telegram messaging service before appearing on social media platforms.