Mizuki Shumsky | Senior Solution Engineer
Proximus Global
Currently a Senior Solution Engineer at TeleSign with cross-industry experience spanning digital identity, telecommunications, and e-commerce. Originally from Japan, I've worked at Rakuten Mobile — Japan's fourth-largest telecommunications carrier — before joining Shopify's Asia-Pacific team in Tokyo. Today at Telesign, I help enterprise customers design and implement authentication, verification, and fraud prevention strategies.
Appearances:
Identity Week America - Day 1 @ 11:30
Beyond SMS OTP: The future of authentication
Sending a one-time passcode over SMS is practically synonymous with authentication. As consumers, we receive them every day; as business leaders, it's often the first security layer we implement.
But the gaps are becoming harder to ignore. SMS OTP doesn't fully protect against account takeover attacks, and SMS pumping fraud can quietly drive costs to astronomical levels.
So what's the answer? Layer in other communication channels? Abandon SMS entirely for newer technologies like Silent Network Authentication?
The reality isn't so cut and dry — the right approach depends on your customers, your risk profile, and the business outcomes you're trying to achieve. In this session, Telesign's Senior Solutions Engineer breaks down where SMS OTP still makes sense, where it doesn't, and how to build an authentication strategy that evolves with your users rather than against them. You'll leave with a practical framework for evaluating what "beyond SMS OTP" should actually look like for your business.
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