21-Year-Old Builds AI Tool That Stops Deepfake Scams

When scammers tried to fool her grandfather with a deepfake audio call, sixth grader Tarini Padmanabhuni was already deep into machine learning. That personal attack transformed her hobby into a mission to protect others from the same threat.

Now 21, Padmanabhuni has turned that childhood passion into DetectifAI, a startup fighting back against AI-generated voice scams. The company spots fake voices during live phone calls, alerting users before they can be tricked into sending money or sharing sensitive information.

"It became clear that this was not just a technical problem," Padmanabhuni tells YourStory. "AI-generated voices can affect families, financial institutions, and the entire idea of digital trust."

The MIT Manipal computer science graduate founded her company in 2025 with offices in San Francisco and Bengaluru. She already has five patents pending in deepfake detection technology.

What makes DetectifAI different is speed. While most fraud detection tools analyze recordings after the damage is done, Padmanabhuni's technology works in real time, running directly on phones and computers without needing cloud processing.

The platform focuses on banking, healthcare, and financial services where voice verification protects customer accounts and patient privacy. Her 10-member team is working to expand the technology to telecom companies and mobile providers.

Padmanabhuni caught the attention of Silicon Valley heavyweight Josh Constine, former editor at TechCrunch, who led her seed funding round alongside investor Manohar Kamath. She credits the founder program The Residency, backed by Sam Altman, with helping her build crucial connections.

The Ripple Effect

DetectifAI's impact extends far beyond individual phone calls. The global deepfake market is exploding from $7.44 billion in 2026 to a projected $32.58 billion by 2033, according to Coherent Market Insights.

As criminals use AI voices to fuel phishing attacks and financial fraud, Padmanabhuni's technology creates a protective shield for everyone with a smartphone. "Ideally, anyone with a mobile phone should have access to some level of protection against AI-generated deception," she says.

Her long-term vision is ambitious: make DetectifAI "for audio trust what Dolby became for audio quality." She wants her technology to become a recognizable safety layer across the entire digital ecosystem.

From a middle schooler studying algorithms to a founder protecting millions, Padmanabhuni proves that personal experience plus technical skill can build solutions the world desperately needs.