The IDA, Central Bank, Department of Finance and other sensitive state bodies are "constantly reviewing" their IT and communications software amid revelations that US security agencies have spied on key allies.
Highly confidential information related to deliberations on Ireland's corporate tax regime or its foreign direct investment policy are of enormous national importance and could be of enormous strategic value to other nations or corporates.
"The Central Bank regards information security as critical to its operations and invests in ensuring continuous improvement in its security risk management. Where the bank observes suspicious activities, it investigates and manages each case in line with internal incident management policies and procedures," according to a statement from the Central Bank. "The review of IT and communications security capability is a continuous activity and security systems are regularly and routinely updated as the threat is constantly adapting and evolving," according to the Department of Finance.
"Public service organisations are not alone in facing internet-based attacks in a range of forms on their information systems. We are not aware of any breaches."
"The IDA is regularly audited by external IT consultants. The audit found that IDA's security controls were adequate, appropriate and effective," the state agency said. "There have been no breaches of IDA IT security system. IDA Ireland's network is behind two firewalls, an outer government firewall as well as an IDA-specific firewall."
A spokesman for the Government said that it would not comment on "national security" as it was a matter for the gardai.