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Meta's Muse AI Chat Security Flaw Exposes 6,800 Conversations

Meta has temporarily disabled the sharing feature of its AI agent Muse after security firm Claroc discovered that over 6,800 private conversations were publicly accessible via web searches. The vulnerability stemmed from shareable URLs that included conversation titles and were indexed in public DNS records, bypassing the intended obscurity of random identifiers. The exposed data included confidential corporate information such as revenue analyses, loan applications, internal HR details, interview notes, and a company's vacation calendar. Meta stated it would review the feature's privacy protections, but Claroc's CTO noted that his report went unanswered. The incident raises privacy concerns, especially in Germany where data protection is a major issue, and could damage public trust. Meanwhile, Muse has seen explosive growth, with 10.9 million global downloads in 40 days, driven by Meta's marketing push and integration across its ecosystem.

• Security firm Claroc found over 6,800 publicly accessible links to shared Meta Muse AI conversations.
• The leaked data included confidential revenue analyses, loan applications, internal HR details, interview notes, and a company's vacation calendar.
• Meta temporarily disabled Muse's sharing feature after being alerted by Ars Technica on October 20, 2026; Claroc stated Meta did not respond to their report.

Meta's AI Companion Muse Hits 10M U.S. Downloads in 40 Days

Meta's AI companion Muse has surpassed 10 million U.S. downloads within its first 40 days, making it the fastest-growing app since Threads. According to Sensor Tower, it reached about 10.9 million global downloads, with 10.2 million from the U.S., accounting for 94% of total downloads. Meta significantly boosted its visibility by allocating 39% of its ad budget to Muse in October, up from 23% in September, making it a top advertiser. Muse shows strong retention, with a 30% 7-day retention rate in the U.S., outperforming rivals like ChatGPT, Grok, and Claude, though it loses more users after the first day. Daily active users peaked at 2.5 million on October 16. Despite rapid growth, monetization faces hurdles due to banks and brokers blocking AI agents. The app has held the No. 1 U.S. App Store rank except for one day.

• Muse surpassed 10 million U.S. downloads in 40 days, the fastest since Threads, with 10.2 million from the U.S. out of 10.9 million total.
• Meta allocated 39% of its ad budget to Muse in October, up from 23% in September, making it the 21st largest brand by U.S. ad impressions.
• Muse achieved a 30% 7-day retention rate in the U.S., beating rivals but losing more users after day one.

India’s New Growth Playbook 2026: AI Partnerships, Faith & Finance, and the Shift to Value

India remains a market of enormous digital scale, but scale alone no longer captures the full opportunity. Explore category trends and growth opportunities shaping India’s next phase of digital growth with Sensor Tower data and insights.