He had gained access to the meeting by buying a share in the company.
Earlier this week, evidence surfaced that Chinese hackers had gained access to several top-secret Pentagon programs.
Rating agencies noted that its banks and central bank had gained access to ECB funding in an emergency.
At a late-night press conference, the FBI said Alexis had gained access to the base with his contractor's ID.
The Washington Post reported last month that Chinese hackers had gained access to the Pentagon's most advanced military programs.
As the hacking was unfolding online, LulzSec said on its Twitter feed that it had gained access to News Corporation networks and taken internal e-mail.
The newspaper, it appears, had gained access to 25,000 FBI documents and hundreds of confidential legal papers by hacking into the computers of Mr McVeigh's defence team.
The company said that earlier this year hackers had gained access to encrypted passwords and personal data, but not financial information, such as credit-card numbers.
The company acknowledged that at least one reporter had gained access to information on Goldman Sachs after the bank complained to the company last month.
It showed, schematically, how the N.S.A. had gained access to Google's (and Yahoo's) data centers, and with them potentially years of customer information.
Just last week, Nasdaq said that hackers had gained access to the passwords of people using one of its online forums.
