Most of the furnaces are out ofservice and there's an acute shortage of boiling oil.

大部分的炉子都不能正常运转，因为那里严重缺乏燃油。

youdao

For example, many of the zombie-based, distributed denial-ofservice attacks that occurred in February were traced back to benign networks which were merely unwitting hosts to remote-triggered Trojans located on their servers.

CNN: Can you counter-attack hackers?