Contact CSIRT

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Team contact details

You can contact Jisc (formerly Janet) CSIRT by email (preferred) or telephone during service hours; or by post.




0300 999 2340
from outside UK: 00 44 1235 822 340


Lumen House
Library Avenue
Harwell Oxford
Didcot, Oxfordshire
OX11 0SG
United Kingdom

* For enquiries relating to Security Contacts please contact the Jisc Service Desk,

Public key information

Jisc CSIRT uses PGP (normally GnuPG or OpenPGP) to ensure the integrity, and when appropriate the privacy, of email messages; and we encourage you to do the same when you write to us.

The public key of the team is available at public keyservers worldwide.

Service Hours

08:00 to 18:00 Monday to Friday
(exceptions below)
Full service Jisc CSIRT will respond to emails and telephone calls within one hour.
18:00 to 00:00 Monday to Friday
09:00 to 17:00 Saturday and Sunday
(inclusive of Christmas)
Reduced service Jisc CSIRT will respond to telephone calls within two hours.
Incoming calls are normally routed through an answering service.

These are generally days observed as public holidays simultaneously in all parts of the UK. Where festivals fall on a Saturday or Sunday, the corresponding public holidays are replaced by substitute days nearby.