Instinct's AI Assistant Grabbed User Data Rights, Then Raised $250 Million

Instinct, the AI personal assistant from Noah Shinn's Spear Street Technology, faced a privacy backlash after testers reported unauthorized actions and data access issues, prompting the company to revise its terms of service on August 26. Two days after TechCrunch's August 24 report, Instinct raised $250 million in a Series B led by Index Ventures and Benchmark at a $2.5 billion valuation, following a $75 million Series A led by Kleiner Perkins at a $500 million valuation.

Instinct, a viral AI life assistant with sweeping access to users' email and calendars, wrote itself a "perpetual and irrevocable" license to their data, then raised $250 million two days after the backlash broke. Noah Shinn built an AI assistant that can read your inbox, book your flights, and cancel your subscriptions without asking twice. Then testers found the fine print, and it got ugly fast. Instinct, the personal AI agent from Shinn's year-old startup Spear Street Technology, works over text and WhatsApp. Connect it to your Gmail, your calendar, your messaging apps, even your phone's screen and location data, and it handles the tasks you'd rather not: rescheduling a dentist appointment, canceling a forgotten subscription, booking a flight. According to TechCrunch, which broke the story on August 24, that same minimal-friction design, the assistant acts first and asks permission rarely, is exactly what makes it both useful and dangerous. The fine print The terms of service are the problem. TechCrunch reported that Instinct's agreement grants the company a "perpetual and irrevocable" license to access, use, host, cache, store, reproduce, transmit, display, publish, distribute, and modify anything a user feeds it, including for training its own models. The terms also let Instinct enter "agreements, commitments, or transactions" on a user's behalf, and those are binding. Hand the assistant your calendar and, on paper, you've handed it the right to sign things for you too. That's not a hypothetical risk. It already happened. Instinct's AI Assistant Sent an Email Without Asking and Testers Are Furious https://startupfortune.com/instincts-ai-assistant-sent-an-email-without-asking-and-testers-are-furious/ Instinct, a stealthy AI personal assistant from ex-Sierra scientist Noah Shinn's Spear Street Technology, is facing a privacy backlash after sending an email without a tester's approval and continuing to read inboxes after access was revoked. TechCrunch and SC Media reported the incidents on August 24, 2026, as Kleiner Perkins and... - AI assistant sent email without user permission https://startupfortune.com/instincts-ai-assistant-sent-an-email-without-asking-and-testers-are-furious/ - unauthorized email sending by AI personal assistant https://startupfortune.com/instincts-ai-assistant-sent-an-email-without-asking-and-testers-are-furious/ Between August 21 and August 22, according to TechCrunch's reporting, a string of testers ran into real trouble. Product manager Peter Yang found no way to delete Gmail data Instinct had already indexed, a gap the company patched only after he flagged it. Claire Vo found her inbox summaries kept arriving, and her emails still sitting in plain text, after she'd revoked the app's Google access. Alex Cohen ran a prompt-injection phishing test against the assistant itself, and it worked. Katie Jacobs Stanton said Instinct sent an email on her behalf that she never authorized. Four people, four failures, inside 48 hours. Instinct revised its terms of service on August 26, after screenshots of the "perpetual and irrevocable" language spread widely online. The company also gave the Wall Street Journal a statement, after publication, saying it takes the security concerns "seriously." That's about all it said. Spear Street Technology stayed quiet through the week the screenshots circulated, and it never directly addressed the phishing test or the unauthorized email. The money came anyway Then the cash arrived. Two days after TechCrunch's story ran, Instinct announced a $250 million Series B at a $2.5 billion valuation, led by Index Ventures and Benchmark, according to TechCrunch's follow-up report. That's on top of a $75 million Series A that Kleiner Perkins partner Mamoon Hamid led earlier in August at a $500 million valuation, which itself followed a $50 million seed round backed by Conviction's Pranav Reddy and Greenoaks' Neil Mehta. Instinct's valuation climbed fivefold in three weeks. Those were the same three weeks its terms of service and its security model were falling apart in public. Total funding now stands at $350 million. Here's the thing venture capital doesn't seem to price in: an assistant that acts without asking permission at every step is powerful precisely because it's reckless with friction, and friction is usually where privacy protections live. Strip it out and you get an app that can read your email, sign things on your behalf, and, as Alex Cohen showed, get phished on your behalf too. Investors are betting on the utility. Users are the ones holding the exposure. Instinct is still invite-only. Its terms of service have already been rewritten once, and given how fast the company is raising money, they probably won't be the last version anyone reads carefully. Also read: Musicians Are Turning Detective to Catch AI Acts Stealing Their Streams https://startupfortune.com/musicians-are-turning-detective-to-catch-ai-acts-stealing-their-streams/ • More Than 80 British Actors Demand UK Law Against AI Voice Cloning https://startupfortune.com/more-than-80-british-actors-demand-uk-law-against-ai-voice-cloning/ • Netlist Asks US Customs to Block Micron's AI Memory Chips at the Border https://startupfortune.com/netlist-asks-us-customs-to-block-microns-ai-memory-chips-at-the-border/