KIEV (Reuters) - Ukraine s Odessa airport said on Tuesday it had tightened security measures after being hit by a cyber attack, while the metro system in Kiev also reported a hack on its payment system.  We report that the IT system of Odessa international airport has been hit by a hacker attack. All services of the airport are working in a stricter mode,  the airport said in a statement.  Separately, Ukraine s cyber police said that, while it was monitoring all incidents, they did not appear to amount to a mass cyber attack on the country.  
Ukraine airport says tightened security after cyber attack