Ostiaries Hits 600M Users
2026-03-02 01:03:21

Ostiaries Achieves Global Milestone with Over 600 Million Users and Reach in 150 Countries for Call Authentication Service

Ostiaries' Call Authentication Service Surpasses Major Milestones



In a significant leap for cybersecurity, Ostiaries, a Tokyo-based company led by CEO Yuji Ohno, has announced that its flagship service, Call Authentication®, has officially expanded its certification capabilities to 150 countries while exceeding 600 million registered users globally. This accomplishment places Ostiaries at the forefront of innovative security solutions in an ever-evolving digital landscape.

The Need for Enhanced Security


The surge in online activities has been mirrored by a troubling increase in cyber threats, notably in the financial sector where incidents of unauthorized access and identity theft are on the rise. Reports indicate that by the fiscal year 2025, there are expected to be approximately 10,000 fraudulent transactions, leading to losses exceeding 700 billion yen. As such, financial institutions are under pressure to upgrade their security measures against potential account takeover risks.

According to the Financial Services Agency, the rise in these threats is alarming, urging stakeholders to adopt robust verification methods to protect their customers effectively. You can review the current status of fraudulent activities online and understand its implications more thoroughly from the agency's official page.

With many services increasingly accessible over the internet, it is essential that these security measures cater not only to tech-savvy users but also to seniors and those less familiar with digital interactions. Ostiaries' Call Authentication system is tailored to meet this demand, providing a two-factor authentication method that is simple and accessible. Users need only to make a phone call for authentication—eliminating the reliance on complex passwords or navigational obstacles, ensuring a seamless experience for all.

Complementary to Other Authentication Methods


Moreover, Ostiaries’ service integrates seamlessly with other authentication technologies. For example, Passkey authentication relies heavily on biometric verification which, while secure, requires initial setup information that may not be user-friendly for everyone. Additionally, it can create challenges when switching devices or underusing device functionality, detracting from user convenience.

By combining Call Authentication with other verification methods, users benefit from a streamlined process where a single call (password-free) provides high-security assurance without compromising convenience. This complementary approach allows for industries that prioritize both safety and user-friendliness to adopt Ostiaries’ technology effectively.

Advantages of Call Authentication


Call Authentication distinguishes itself as a robust method where users can verify their identity simply by dialing a designated phone number. This method also circumvents issues such as SMS delivery failures or delays, which are common pitfalls of traditional text-based authentication. By confirming a user’s identity via a pre-approved phone number, this service importantly mitigates risks associated with unauthorized registrations or impersonation while streamlining the verification process.

Company Overview


Ostiaries was established on April 24, 2014, and has its headquarters located at 1 Naito-cho, Shinjuku-ku, Tokyo. The company specializes in providing personal authentication services through call-based methods and also offers a credit service related to phone numbers, known as PSTN. The corporate website is accessible at Ostiaries Official Site.

Contact Information


For inquiries regarding this news release, please contact:
Ostiaries Public Relations
Phone: 03-6380-4991
Email: Contact Us
Please note that the details and images published in this press release reflect the state as of the announcement date and are subject to change without prior notice.


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