Online forum 4chan has re-emerged after a major shutdown earlier this month. In a blog post titled “Still Standing,” the site detailed the sequence of events that forced it offline, shedding light on the breach.
In the update, 4chan said a hacker managed to infiltrate its servers by exploiting an out-of-date software package via a bogus PDF upload, resulting in the breach of multiple databases, vandalising the website, and exposing personal information belonging to moderators and many users. The forum noted that the damage was serious enough that site administrators believed keeping the servers online risked even greater harm, therefore resulting in the moderation team’s decision to shut down servers on 14 April 2025.
The blog attributed the breach to long-standing technical neglect, driven by a shortage of skilled developers and severe financial constraints. 4chan acknowledged that it had been unable to update its infrastructure effectively due to a lack of manpower and resources. The post also highlighted the difficulty of attracting advertisers and payment providers willing to work with the platform and that raising funds for new equipment had taken nearly a decade.
Now back online, the site’s boards and front page are now operational again, but some important changes are being made. Posting and image uploads remain disabled, while the /f/ board – known for hosting .swf files – will stay permanently shut due to security risks associated with the file format. Similarly, PDF uploads are temporarily disabled, with plans to reintroduce them once additional safeguards are in place.
To help rebuild and maintain the platform, 4chan is recruiting volunteers to assist with the workload. The moderation team emphasised their commitment to keeping the forum alive, stating, “no matter how hard it is, we are not giving up.”
(Source: 4chan [official blog], via Engadget)
