After an investigation, Germany attributed the hacking of a call regarding Ukraine missiles to human error on the part of Russia.
On Tuesday, Germany stated that a mistake made by people led to Russia acquiring a recording of high-ranking German military members discussing the provision of long-range weapons to Ukraine. Berlin refuted claims that its systems were hacked. As reported by Henry Ridgwell in London, Western allies are concerned about what other sensitive information Russia may have obtained.
Source: voanews.com