Bersatu's Hilman Idham says the situation was concerning as people were registered for the insurance policy without their consent.

The hackers 'had access to certain customer data such as names, addresses, email addresses and telephone numbers, but not bank details', a spokesman says.

Twitter has not commented on the report, which was first posted about on social media on Dec 24, nor responded to inquiries about the breach since that date.

Communications and Digital Minister Fahmi Fadzil says several documents and pieces of equipment have been taken for investigation purposes.

Australian healthcare company Medibank has repeatedly refused to pay the hackers.

Medibank says a 'sample' of data from some 9.7 million clients has been posted on a 'dark web forum' – and that more leaks are likely.

Since Singapore Telecommunications Ltd-owned Optus disclosed last month the theft of about 10 million customer records, the country's biggest companies and government bodies have been on high alert for repeat attacks.

Police say a full investigation will be carried out, although Home Minister Hamzah Zainudin has denied the claims.

The investigation shows that Credit Suisse had flouted international banking rules by holding funds linked to crime and corruption over several decades, French media outlet Le Monde says.

It says the hackers targeted an external company in Switzerland that the ICRC contracts to store data.

The company, owned by China's Geely, says 'there may be an impact on the company's operation' but likely no 'impact on the safety or security of its customers' cars or their personal data'.

Unlike conventional botnets that rely on predetermined channels to ensure their survival, Glupteba is programmed to find a replacement server in order to keep operating even after being attacked, says Google.