Converse Singapore's website was hacked by someone who signed off as 404(Death) on Sunday.
Checks by The Straits Times showed that the website was still down at noon on Monday, but it was up and running again by 1pm.
When contacted, Alantic Sports which runs 14 outlets selling the popular sneakers in Singapore, confirmed the hacking incident, but declined to comment further.
The Straits Times understands that it is not the first time that Converse Singapore's website has been hacked, although no police report has been made of the latest incident.
Last month, City Harvest Church co-founder and pop singer Ho Yeow Sun's official website was hacked, followed by the hacking of pre-school operator PAP Community Foundation's website two weeks ago. Police said that investigations are ongoing for both incidents and advised web administrators to patch their servers with the latest updates.
Under Section 5 of the Computer Misuse and Cybersecurity Act, anyone who carries out any act knowing that it will cause an unauthorised modification of the contents of any computer shall be liable on conviction to a fine of up to $10,000 or jailed up to three years or both.