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timeline since cyber attack on 15 June 2023


week 29/2024

All BESSY II instruments are integrated into the new IT network and can record data


week 16/2024

Beamlines in operation: 60%


week 08/2024

Beamlines in operation: 45%


week 07/2024

Original HZB-website back online and access to GATE open for the beamtime applications (with 2 factor authentication)


week 02/2024

  • Launch of the call for proposals (2024-II)
  • Beamlines in operation: 33%

week 46

Open letter to BESSY II users


week 44

  • Start of transfer for all beamlines into the new robust, full-featured IT-Infrastructure with two pilot-beamlines (one dipole, one undulator)
  • Restart user operation at beamlines with already independent network structures
  • Beamlines in operation: 20%

week 43

GATE accessible (internal use only)


week 42

  • LAN available
  • Network communication between HZB computers reestablished

week 38

Launch of the current temporary HZB website


week 28

  • WiFi reestablished
  • Still no network communication between HZB computers possible
  • Rollout of a new email system
  • No access to all previous emails or contacts available

week 27

  • BESSY II light source in operation again
  • PTB beamlines and BAMline in operation thanks to their independent network

week 26

  • Limited internet access reestablished
  • No network communication between HZB computers possible
  • Task force Restart BESSY II
  • Concept for recommissioning of beamlines based on cyber security measures for the IT infrastructure

week 24

  • Cyber attack
  • All systems were shut down