CyberAgent Inc. (株式会社サイバーエージェント, Kabushiki-gaisha Saibāējento) is a Japanese digital advertising company, which was founded in 1998 by Susumu Fujita and headquartered in Shibuya, Tokyo.

[4][5] CyberAgent is listed on the Tokyo Stock Exchange and is a constituent of the Nikkei 225 since 2000.

[10][11][12] In April 2015 a former employee of CyberAgent accused the company of unauthorized stealing of articles and images, inappropriate quoting, and undercover marketing were often pointed out with BuzzFeed Japan also accused the company of the same thing but the allegations were later denied.

[13][14][15] In the fall of 2016, DeNA's healthcare information website "WELQ" had a problem due to inappropriate content and inappropriate citations, and from December 1 to 2, 2016, thousands of articles related to medical and health related to “Spotlight” and a few percent of approximately 35,000 articles related to by.S were deleted.

[citation needed] CyberAgent explained that the privately held articles were written by registered users and with the company claiming could not be fully verified with addiction expanded the scope of private disclosure, and deleted all articles posted by registered users on both websites.