https://www.theguardian.com/technology/2017/oct/11/israel-hack-uncovered-russian-spies-use-kaspersky-lab-2015-report-us-software-federal-government

Information led to US decision to end use of company’s software across federal government in December

An Israeli security agency hacked into Russian antivirus firm Kaspersky Lab in 2015, providing the crucial evidence required to ban the company from providing services to the US government, according to a report.