“Google’s hands are not tied, and it has a responsibility to act,” he wrote.
In an email to The Times, Lara Levine, a Google spokeswoman, declined to comment on the investigation or the senator’s letter.
Mr. Blumenthal made the same case in a letter to Microsoft from Satya Nadella, the company’s chief executive, and its president, Brad Smith. A Microsoft representative declined to comment further.
Suicide site administrators have long used the American firm Cloudflare, which provides cyber protections, to obscure the names of its web hosts, making it difficult or impossible to know which company is providing those services.
In 2019, Cloudflare was alerted by Australian government officials about the dangers of a suicide website. The following year, parents whose children died while participating in the site asked Cloudflare’s chief executive Matthew Prince to stop providing his services on the site, but he did not respond. CloudFlare declined to comment for this article.
The two individuals who started the site using the online names Marquis and Surgeon tried to hide their true identities. But using domain registration records and invoices, financial documents, other online activity, court records and interviews, The Times revealed that they are Lamarcus Small, 28, of Huntsville, Ala., And Diego Joaquila, 29, of Montevideo, Uruguay.
Mr. Nana denied any involvement with the site. Mr. Gallant admitted in an email that he had posted on the site as a surgeon, but denied that he was its founder or operator.
After the article was published, in December. 9, Marquis announced on the site that he was resigning as administrator, deleting his account permanently and handing over the management of the site to someone using the online name Rain & Sedness.