The Computer Misuse (Amendment) Act 1998 came into effect in August 1998 and amends the Computer Misuse Act of 1993.  It does so by:

• making it an offence to cause a computer to perform a function for the purpose of securing access (whether authorised  or  unauthorised)  to  any  program  or  data  in  a computer with an intent to commit an offence.
   
• making  it  an  offence to interfere or interrupt or obstruct the lawful use of a computer; or impede or prevent
  access or impair the usefulness or effectiveness of any program or data stored in a computer.
   
• making it an offence to disclose any password or access code if the disclosure is for wrongful gain, unlawful purpose or with knowledge that the disclosure would cause wrongful loss.
   
• creates  a  category of "protected computers" and any offence in connection with such computers will result
  in enhanced penalties, such as fines up to S$100 000 or jail terms up to 20 years.
   
•  generally enhances the penalties for all offences committed under the new Act.
   
• relaxes  the  definition  of  "damage" such that it would now include any impairment to a computer under the
  statutorily prescribed criteria.
   
• widens the powers of police officers to give access to computer and data for verification purposes.