In a more covert fashion.

以更隐蔽方式重操旧业
Plus there's no telling how many servers it's replicated on anyway.

而且不清楚有多少服务器
You're right.

你说得对
We're ready to give the profile.

我们可以做侧写了
We believe the unsub responsible for these deaths may be a teenager.

这几起谋杀案的不明嫌犯可能是一名少年
He's a loner. He doesn't participate in team sports

他为人孤僻不参与团体运动或活动
Or group activities. He's withdrawn very low self-esteem.

性格内向自尊心很弱
His only form of pure interaction is online.

唯一与人互动的方式是上网
He engages in activity that draws attention to himself

从事能让别人注意他的活动
Yet isolates him from his peers.

但又与同龄人有隔阂
Parents and teachers should watch out

父母及老师应注意
for the warning signs--

以下可疑迹象