Big Echo

Big Echo is a Japanese karaoke box chain. According to Chinese Wikipedia, it was established in September 1988 and has been operated by Daiichikosho Co., Ltd. Its first branch was located in Hakata-ku, Fukuoka, and it has 244 branches across Japan plus 2 overseas branches in Shanghai, China. Its official website presents it as a karaoke chain with all rooms equipped with DAM systems.

Big Echo was established in September 1988. Its first branch was located in Hakata-ku, Fukuoka. It has been operated by Daiichikosho Co., Ltd. and currently has 244 branches across Japan and 2 overseas branches in Shanghai, China.

Product categories. Karaoke box services

• 2026

  Daiichi Kosho discloses supplier data breach potentially affecting about 8.72 million customers

  Daiichi Kosho, operator of the Big Echo karaoke chain, published a statement on October 8, 2026 disclosing an incident at Nippon Columbia Group (NCG), the entertainment group that handles customer information for the firm. According to NCG, a malware infection was discovered on an employee PC between October 1 and October 2, 2026, and the device was isolated from the network on October 2; NCG reported the scope of impact to Daiichi Kosho on October 5. Daiichi Kosho said approximately 8,724,000 customers who registered or made reservations at its stores may have had their names, genders, dates of birth, email addresses and telephone numbers leaked to external parties, and that it cannot rule out the possibility of a leak. About 5.6 million of those potentially affected are Big Echo customers and 3.5 million are DK Dining customers, with Mega Big, Banana Club, Karaoke Club Dam and B-Garage also affected. NCG has reset affected passwords and is investigating the cause and whether data was compromised, while Daiichi Kosho urged customers to watch for phishing attempts and opened a toll-free helpline.

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• 2026.10.08

  Reported2026.10.12

  Daiichi Kosho discloses supplier data breach potentially affecting about 8.72 million customers[4]Daiichi Kosho discloses supplier data breach potentially affecting about 8.72 million customersinfosecurity-magazine.com

  Daiichi Kosho, operator of the Big Echo karaoke chain, published a statement on October 8, 2026 disclosing an incident at Nippon Columbia Group (NCG), the entertainment group that handles customer information for the firm. According to NCG, a malware infection was discovered on an employee PC between October 1 and October 2, 2026, and the device was isolated from the network on October 2; NCG reported the scope of impact to Daiichi Kosho on October 5. Daiichi Kosho said approximately 8,724,000 customers who registered or made reservations at its stores may have had their names, genders, dates of birth, email addresses and telephone numbers leaked to external parties, and that it cannot rule out the possibility of a leak. About 5.6 million of those potentially affected are Big Echo customers and 3.5 million are DK Dining customers, with Mega Big, Banana Club, Karaoke Club Dam and B-Garage also affected. NCG has reset affected passwords and is investigating the cause and whether data was compromised, while Daiichi Kosho urged customers to watch for phishing attempts and opened a toll-free helpline.

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1. 1カラオケ ビッグエコー公式サイト | 全室DAMbig-echo.jp
2. 2Big Echowikidata.org
3. 3Big Echozh.wikipedia.org
4. 4Daiichi Kosho discloses supplier data breach potentially affecting about 8.72 million customersinfosecurity-magazine.com