One employee was careless and gave them to a distant computer, hacking tools, and then finds that the Russian hackers. US National Security Agency NSA leak of the

hacking tools used to be involved in the investigation told Reuters four. These tools, such as Cisco Systems Inc. and seller of computer and communication companies to utilize the software flaw allowing hackers. In July this year, the 'Shadow brokers called a team with a variety of tools that the public website. 28 November US presidential elections to be held ahead of a Russia-US political parties or representatives of organizations are trying to hack into US government claims that these tools are only just appeared. The reports before US lawmakers on Thursday responsible for this incident.