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

As a large group they can attack even gaur, leopard and even tiger.

大群的豺甚至可以攻击野牛，豹甚至老虎。

youdao

As it is, if I want my scouts to attack only Ion Frigates, I might have to select a very large group of mixed enemies or attack one frigate at a time.

CNN: Homeworld brings epic feel to real-time strategy

An attack on a restaurant by a large group of men was not fuelled by religious issues, police said.

BBC: Police outside the Moghul Durbar