A computer screen shows the WannaCry ransomware application which demands payment to unlock the computer.

The National Information Technology Development Agency (NITDA) has said no report of the WannaCry Ransomware attack has been recorded in any corporation located within the country.

While disclosing this to newsmen on Sunday, The Director-General of NITDA, Dr Isa Ali Ibrahim Pantami, revealed that the agency has put some measures in place to stop the spread of the malware and advised the public to report any abnormal activity on their computers to the agency.

Reports say a major part of the African continent was spared by the ransomware which has infected hundreds of Windows computers in over 150 countries across the world.

However, according to cybersecurity giant, Kaspersky Lab’s estimation, the attack whose first few hours affected major corporations in the United States, Europe, South America and Asia, only affected parts of South Africa, Nigeria, Egypt, Angola, Mozambique, Tanzania, Morocco and Tunisia.

The ransomware operates by first seizing control of files on Windows computers and goes on to demand payment of $300 in virtual currency, Bitcoin before it can restore access. It doubles the cost of restoring the files after three days of non-payment and finally threatens to delete the files if the payment is not made within one week.

Experts have  advised computer users to back up their files, not pay the ransom, install anti-virus and update their systems with ransomware removal tools.