The AO3 platform, operated by the Organization for Transformative Works, announced that it is currently offline following a “security incident” that prompted an immediate shutdown.
According to the organization, the outage may last as long as a month while technical staff and volunteers conduct a thorough investigation and implement remedial measures.
During the downtime, users have reported the appearance of unofficial clone sites attempting to replicate AO3’s content, raising concerns about data integrity and user privacy.
The nonprofit emphasized that it is a volunteer‑run service and that restoring full functionality will depend on the outcome of the security review.
No further details about the nature of the breach or the extent of compromised data have been disclosed at this time.