US Agencies Warn Companies: Preserve Signal and Slack Chats

US antitrust enforcers have warned companies under investigation to preserve and turn over instant messaging records from platforms like Slack and apps such as WhatsApp and Signal, with failure to do so potentially leading to fines or criminal charges. Recent cases have seen concerns raised about deletion of chats and messages, with the Justice Department seeking sanctions against Google for failing to preserve internal communications and the FTC alleging that Amazon employees used Signal to hide communications during an antitrust investigation.