Leading international software security group Kaspersky in its recent reports on worldwide cyber crime has placed Bangladesh in the world's number one position in both mobile malware attacks and offline attacks and 19th position on online attack target.

Hackers installed malicious software into the Bangladesh Bank system in January, which helped them gain knowledge of the central bank's working methods before stealing some $101 million. The forensic investigation by the BB, launched soon after the February 4 digital heist, detected the presence of the malware, said finance ministry and BB officials.

The hackers who stole Bangladesh Bank's money were on their way to pull off a heist of about $1 billion, but the banking system responded in time to stop the transfer of $870 million from the central bank's account with the New York Federal Reserve Bank.

The US army has temporarily taken down its website after a hacking attack.