When online, netizens must still observe relevant Hong Kong laws.  The following are the most common offences relating to online behaviour for your reference:

1. Laws against unauthorized access
   Cap.106 S.27a - Unauthorised access to computer by telecommunication
   
   
2. Laws against criminal damage
   
   • Cap.200, S.60 Criminal Damage
   • Cap.200 S.161- Access to computer with criminal or dishonest intent
   
   
3. Laws against online obscenity
   Cap.390 Control of Obscene and Indecent Articles Ordinance