Can a client waive legal professional privilege by uploading material to an AI tool?
Potentially, yes. Legal professional privilege depends on confidentiality. If a client uploads privileged material, such as legal advice, draft evidence, settlement strategy, counsel’s opinion, correspondence with their solicitor or documents prepared for litigation, into a public or third party AI tool, they may compromise the confidentiality needed to maintain privilege.
This does not mean every use of AI will automatically waive privilege. The risk will depend on the circumstances, including the tool used, the terms of use, who can access the uploaded material, whether the material is retained or used for training, and whether the disclosure is inconsistent with maintaining confidentiality. The difficulty is that once material is uploaded, it may be hard to know where it has gone, who can access it, or whether it can be deleted.
Practitioners should consider warning clients not to upload legal advice, court documents, draft evidence, discovery, confidential correspondence or other sensitive material into AI tools without first obtaining legal advice. This warning may be appropriate in retainers, client updates, litigation guidance, or matter specific correspondence. Practitioners should also consider giving similar guidance where clients are self managing parts of a matter or using AI to understand advice, prepare documents or summarise legal material. Current commentary on AI and privilege emphasises that confidentiality is central to legal professional privilege, and that using third party AI tools can create real risks for privileged and confidential material.