"This strike will continue until the eliminating of that unpleasant film. Be careful this strike can differ in type," said the declaration on an online message panel known as pastebin.com, where online scammers often publish such risks. It was not possible to confirm the identification of the person who published the declaration.
A video clip mocking the Prophet Mohammad, made with private resources in the U. s. Declares and published online, has captivated days of presentations in the Arabic world, African-american, Japan and in some European nations.
Bank of America said its web page is available but some clients may experience periodic slowness. "We are working to make sure full accessibility," bank spokesperson Level Pipitone said.
Asked whether the web page was the sufferer of a denial-of-service strike, he said: "I can tell you that we consistently take practical actions to protected our systems."
The New York Stock Exchange, operated by NYSE Euronext, declined to comment.
Bank of America customers reached by Reuters in New York, Georgia, Ohio and Michigan said they could not access the website.
Last year, the second largest US bank experienced six days of problems with its website, which it blamed on heavy traffic and an upgrade of its systems. The site allows customers to check balances, transfer money and make payments.