Japan Cracks Down on Offshore Casino Sites Targeting its People

Japanese officials in a governmental office tracking and blocking offshore gambling site activity on monitors.

Japan is taking firm action to combat illegal offshore casino websites and their advertisements targeting local residents. With updated legislation in place, the focus is on removing infringing content and reshaping the country’s online gambling ecosystem. Here’s what you need to know about this landmark decision.

Understanding Japan’s New Gambling Advertising Laws

In June 2025, Japan’s parliament approved significant revisions to the Basic Law on Gambling Addiction Countermeasures. This move aims to combat the surge of offshore gambling platforms targeting local users with illegal advertisements and promotions.

Key Features of the Amended Law

  • Promotion Ban: Advertising or promoting foreign online casinos through banner ads, social media, influencer content, or affiliate links is now explicitly prohibited.
  • Targeting Casinos Licensed Overseas: Even if the casino holds licensing in foreign jurisdictions, it is illegal to promote or operate these platforms for Japanese users.
  • App Restrictions: Online casino-related apps targeting the Japanese market are also banned under the new regulation.

How Will the New Enforcement Mechanism Work?

Starting September 25, 2025, the law will give Japanese authorities stronger powers to monitor, remove, and limit access to offshore gambling content targeting local players. Here’s how these mechanisms will function:

Role of the National Police Agency

The National Police Agency (NPA), along with the Internet Hotline Center (IHC), is tasked with monitoring illegal gambling content online. Their responsibilities include:

  • Content Takedowns: Ordering the removal of infringing ads or websites.
  • ISP Collaboration: Instructing internet service providers and social media platforms to block access to harmful material.
  • Expanded Cyber Patrols: Conducting active searches to identify offenders and take quick action.

Addressing Challenges and Privacy Concerns

Japan is also exploring technical measures, such as web-blocking solutions for specific overseas websites. However, this aspect of enforcement remains under legal scrutiny due to privacy and constitutional implications.

The Bigger Picture: Why This Crackdown Matters

The decision to overhaul gambling promotion laws in Japan is driven by various societal, economic, and legal factors. These include:

Rising Use of Offshore Sites

According to recent estimates, approximately 3.37 million Japanese residents engage in gambling through offshore platforms, with total wagers reaching an astounding ¥1.2 trillion ($8.3 billion) annually.

Low Public Awareness

Only 40% of Japanese residents understand that gambling on offshore platforms is illegal, with even lower awareness among younger demographics. This has prompted an urgent push for stronger public awareness campaigns alongside law enforcement.

International Collaboration

To further its compliance efforts, Japan is working with foreign jurisdictions to prevent operators in popular markets like Curaçao and Malta from accepting Japanese players.

Industry Implications: What to Expect

The updated legislation carries implications for multiple stakeholders in the gambling industry, including affiliates and foreign operators:

  • Affiliate Restrictions: Marketers linked to offshore sites will likely face takedown orders and potential civil liabilities.
  • Changing Marketing Tactics: Companies may need to revisit their strategies in Japan, focusing on legal compliance to avoid enforcement action.
  • Signal to Licensing Hubs: Countries like Malta and Isle of Man, often home to these gambling operators, may also face pressure from Japan to enforce compliance measures.

As Japan ushers in a new era of online gambling regulation, the message to the global industry is clear: illegal targeting of its residents will no longer go unchecked.

Conclusion

A cybersecurity specialist identifying illegal gambling site ads using advanced software tools in Japan.

Japan’s forthcoming regulations signal a pivotal shift in how the country tackles illegal offshore gambling. Through targeted enforcement actions and comprehensive legal measures, authorities aim to safeguard local users and reshape the industry landscape.

Thabo Mbeki
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