NetSec http://netsec.svn.ch/ repo — Adrian will provide access; let him know your ETH user name.
https://svn.inf.ethz.ch/svn/perrig/netsec/SCIONSCION/www.Group GitLab repository: https://gitlab.inf.ethz.ch/OU-PERRIG (all staff members have access automatically).
Make sure to create your repos under the group namespace. If you use your personal namespace, they will automatically get deleted some time after you graduate.
See also Repositories and Website for the paper repository and the group website.