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We are the Computer Security and Incident Response Team (CSIRT) for the Janet network. Part of Jisc's Security Operations Centre, our mission is to safeguard the current and future network security of Janet (steering the security policies for all Janet connections) and of our customers, creating a secure environment to conduct your online activities. Our primary function is monitor and resolve any security incidents that occur on the Janet network, with specialists tracking a range of platforms, including Unix, Linux and Windows.

Update on NCA Action on GameOver Zeus and Cryptolocker

Friday, June 13, 2014 - 16:07

The period of protection offered by the joint action between the NCA and FBI ends at 00:00BST on Tuesday 17 June. We recommend that you take full advantage of the remaining time and clean up any infected hosts.

If you have used the lists of domains provided by Janet CSIRT, they will continue to provide some temporary protection. Please be aware, however, that should the botnet return to the control of the operator, it is possible that domains may change at any time if the malware author updates the code; the lists will then provide little protection. We therefore advise that you clean up any infected systems prior to Tuesday's deadline.

We will continue to monitor the situation and update you should anything change, but we advise that you take this opportunity to protect your systems.

If you have any questions, please do not hesitate to contact us by e-mail at or by telephone on 0300 999 2340. Further information is available from the NCA website: