One of Britain's most powerful academic supercomputers has fallen victim to a "security exploitation" of its login nodes, forcing the rewriting of all user passwords and SSH keys.
The intrusion, which is understood to be under investigation by GCHQ offshoot the National Cyber Security Centre (NCSC), rendered the ARCHER high-performance computing (HPC) network unavailable to its users on Tuesday.
Sysadmins warned ARCHER users that their SSH keys may have been compromised as a result of the apparent attack, advising them to "change passwords and SSH keys on any other systems which you share your ARCHER credentials with".
In a statement posted to the project's status page on Wednesday, ARCHER admins said it appeared several academic high-performance computers were disrupted across Europe in addition to the Cray-built ARCHER. They explained:
Due ..
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