Between 5 and 9 June, 6 suspects were arrested and 36 were interviewed during an internationally coordinated operation in 6 European countries. The targets are all suspected customers of a counter anti-virus platform and crypter service – two cybercriminal tools used for testing and clouding of malware samples to prevent security software solutions from recognising them as malicious.

https://www.europol.europa.eu/newsroom/news/international-operation-targets-customers-of-counter-anti-virus-and-crypter-services-6-arrested-and-36-interviewed