4 We should close all the doors and windows carefully to avoid burglars breaking into our houses.
all the doors and windows should be closed carefully to avoid burglars breaking into our houses.
5 Cybercriminals defraud the online victims by tempting them to give their personal information.
the online victims are defrauded  by tempting them to give their personal information.
6 Fraudsters will be able to use more subtle tactics to defraud the victims.
 more subtle tactics will be used by Fraudsters to defraud the victims.
7 The detective is going to investigate this criminal case carefully so that sooner or later, he will identify the suspects and arrest the criminals.
this criminal case is going to be investigated by The detective carefully so that sooner or later, he will identify the suspects and arrest the criminals.