KEY POINTS
  • Ukraine said Russia is injecting Ukrainian businesses with malicious software to coordinate a cyber attack.
  • Police said the hackers are targeting companies, including banks and energy infrastructure firms.
  • The Kremlin denied allegations.
A view shows a laptop display showing part of a code, which is the component of Petya malware computer virus according to representatives of Ukrainian cyber security firm ISSP, at the firm's office in Kiev, Ukraine July 4, 2017. 

Hackers from Russia are infecting Ukrainian companies with malicious software to create “back doors” for a large, coordinated attack, Ukraine’s cyber police chief told Reuters on Tuesday.

The hackers are targeting companies, including banks and energy infrastructure firms, in a roll out that suggests they are preparing to activate the malware in one massive strike, cyber police chief Serhiy Demedyuk said. Ukrainian police are working with foreign authorities to identify the hackers, Demedyuk added.