From en.secnews.gr
![espionage](https://pics.imgrapid.com/wp-content/uploads/2020/10/%CE%BA%CE%B1%CF%84%CE%B1%CF%83%CE%BA%CE%BF%CF%80%CE%B5%CE%AF%CE%B1-min.jpg)
Hackers used unknown, until recently, tools in order to spy on defense and aerospace organizations . The attacks started with phishing emails and social engineering and were very targeted. McAfee researchers first spoke about this campaign, known as Operation North Star , a few months ago.