Description: Unidentified hackers have spied on three German IT firms that provide services to federal ministries and agencies. According to the letter of caution, the first attack—on the Dortmund-based IT firm Adesso—became public knowledge. Adesso claims on its website that outside IT security experts discovered that the unidentified hackers had access to the corporate networks. Likewise based in Dortmund, Materna was impacted. It has not yet been feasible to establish whether email correspondence, particularly with federal authorities, has been lost, according to Materna. Init, a Berlin-based corporation, was a victim of the third attack. The Interior and Economics Ministries of the Federal Government are among its clients. At the request of BR, Init acknowledged the cyberattack. Customers who were impacted have been notified.

Description: The Materna security breach also prevented Vodafone's prepaid cards from being registered online and prevented online sales from proceeding. Shortly after Materna acknowledged conducting a skillfully designed cyberattack on the company, the sale of SIM cards on Vodafone's website was suspended. In order to protect system security and client data, Vodafone temporarily disabled Materna's CallYa services. A statement claims that the business is once more up and running. Systems that were newly built or totally modified were used by employees; they were never connected to the compromised infrastructure.

Description: The Dortmund IT service provider Materna Information & Communications SE has fallen victim to a comprehensive cyber attack. The provider's systems and services are temporarily restricted in availability for security reasons. If the attack involves ransomware, the kind that has recently been affecting more and more businesses, it is yet unclear. Additionally, as a preventative step, the incident was notified to the relevant data protection body. If data was taken is still a matter of debate.

Description: Vodafone's online sales of "Callya" prepaid cards were impacted by the purported ransomware attack on the IT service company Materna. The Vodafone website stopped selling the SIM cards, just after Materna had given the business permission to launch a "professionally elaborated cyber attack. Both businesses emphasise that there hasn't been any determination of a consumer data leak. "Restrictions on online sales and online registration of Callya products" should be lifted soon, according to Vodafone. Until then, there would be other ways to make the reservation. Many clients' systems were also impacted by the Materna security breach. There were Materna-operated check-in machine outages at several German airports. Workers were "equipped with newly installed or completely newly configured systems," which had never been linked to the impacted infrastructure.