However, one computer security expert said that even an attack of this size did not necessarily have to be the work of a large or powerful group.

不过，一名计算机安全专家称，即使是这样大规模的攻击也不一定来自大型或有势力的组织。

youdao

The benefits of information security-protecting computer systems and networks-are inherently invisible: if threats have been averted, things work as normal.

信息安全的利益在于——保护计算机系统和网络——具有其余生俱来的的不可见属性：如果危险已经转移，则一切都会正常工作。

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As its title suggested, the team was in charge of computer security for the conference, and almost right away there was more work than they could handle.

正如它的名字所称的，这个小组负责会议的电脑安全，而且几乎马上他们的工作就开始超负荷了。

youdao

As part of a legal settlement to regain control of 3322.org, founder Peng Yong has given assurances that he will work with Microsoft and China's central computer security agency to limit abuse of the site's domains.

BBC: Chinese cybercrime site cleans up

He said the computer giant had done "tons of work to make Vista a fantastic experience when it comes to security".

BBC: NEWS | Business | Microsoft says Vista 'on target'