The Reserve Bank of Australia (RBA) has confirmed its networks were hit by an unknown number of cyber attacks but said no data has been lost during the raids.
The RBA, Australia's central bank, divulged limited details about the cyber attack in a statement but said it had already taken appropriate measure to contain the threats.
"The Bank has on occasion been the target of cyber attacks. The Bank has comprehensive security arrangements in place which have isolated these attacks and ensured that viruses have not been spread across the Bank's network or systems," it said.
"At no point have these attacks caused the Bank's data or information to be lost or its systems to be corrupted. The Bank's IT systems operate safely, securely and with a high degree of resilience."
Widespread reports suggest the attacks hit the bank in November 2011 and attempted to infect the RBA using malicious email messages.
The source and nature of the malware used in the attacks remains unclear and at the time of publishing the RBA had not responded to V3's request for comment.
Over the past few years financial institutions have been hit with attacks from a variety of groups each with their own motivation and tools.
The malwares used in the assaults have ranged from very specific tailored tools, to out of the bag automated exploit kits using malwares like the Zeus banking Trojan, to common denial of services attacks.
Earlier in March hacktivists announced plans to launch another series of distributed denial of service (DDoS) attacks against financial institutions in the US.
Prior to the recent outages hacktivists had hit other financial institutions including HSBC with DDoS attacks at the end of 2012.
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