Threat actors loyal to the Kremlin have stepped up attacks in support of its invasion of Ukraine, with denial-of-service attacks hitting German banks and other organizations and the unleashing of a new destructive data wiper on Ukraine.

Germany’s BSI agency, which monitors cybersecurity in that country, said the attacks caused small outages but ultimately did little damage.

“Currently, some websites are not accessible,” the BSI said in a statement to news agencies. “There are currently no indications of direct effects on the respective service and, according to the BSI’s assessment, these are not to be expected if the usual protective measures are taken.”