AI-Enhanced Bots Drive Surge in Online Fraud and Market Disruption
In 2025, malicious AI-enhanced bots accounted for over 70% of the 53% bot traffic on the internet, causing documented fraud losses and disrupting legitimate commerce. In Japan alone, ad fraud losses reached 350 billion yen, while fraudulent bot orders totaled 130 billion yen, yet most companies remained reluctant to implement fraud detection measures due to concerns about perceived advertising effectiveness.
What happened
In 2025, bot traffic accounted for 53% of global internet traffic, with over 70% being malicious bots used for commodity resale, ticket scalping, ad fraud, and cyberattacks.
AI-enhanced bots have gained the ability to bypass CAPTCHA verification systems, which were previously thought to be human-only tests. A security engineer at Macnica discovered approximately one year prior that such AI-powered bots can even automatically reload verification pages when unable to determine the correct image.
Fraudsters have set up illegal websites that publish advertisements from hundreds of legitimate companies and use bots to repeatedly click these ads to generate fraudulent revenue. Investigations found international cybercrime organizations involved in ad fraud schemes that frequently change domain names and spoof server locations to evade identification.
Reported impact
In Japan in 2025, ad fraud losses caused by bots reached approximately 350 billion yen (about 70 billion Taiwan dollars), an increase of 1.5 times compared to 2023, concentrated in advertising-heavy sectors like food and beverage, real estate, and information technology.
Spider Labs estimated that in 2025, fraudulent orders through bot-enabled resale and malicious operations totaled 130 billion yen (about 26 billion Taiwan dollars). Malicious bot traffic in Japan surged 1.4 times compared to 2023 to account for 26% of total internet traffic, with retail particularly affected.
Index analysis
Only 51.1% of 417 surveyed Japanese advertising companies had adopted countermeasures to detect non-compliant ad placements or bot clicks, with many companies showing passive resistance due to concerns that implementing safeguards would reduce apparent click metrics.
A real estate brokerage executive stated that adopting fraud detection measures would reduce visible click volumes, potentially leading senior management to judge the advertising as ineffective. Industry leaders attributed resistance to preventing fraud to widespread "click-centric thinking" within enterprises.
Governance controls
The Digital Ad Quality Certification Organization surveyed 417 Japanese firms on ad fraud defenses, finding that only about half had implemented detection tools despite industry appeals for action.
Classification
Sources and evidence
This record was researched and written by the Index, based on the following original reporting.