Poland are moving to another training facility as a result of fears that they are being too closely watched.
Their current facility in Daejeon is fitted with a closed-circuit television system, which their South Korean hosts say is installed for security purposes.
But Zbigniew Listkiewicz, chairman of the Polish FA, is apparently worried that videos of the squad training could end up in the hands of South Korea national coach Guus Hiddink.
There are many teams better than South Korea
Last Friday, Poland coach Jerzy Engel apparently spotted a Korean "spy" on a roof watching their closed training session.
However, Polish FA vice-chairman Zbigniew Boniek has said the squad are not running scared of the World Cup co-hosts, who are their first opponents in Group D on 4 June.
"Koreans play like kamikaze," he told the Rzeczpospolita newspaper. "They run at top speed from the first minute onwards.
"But, when they get tired, the tactical and footballing superiority of their rivals will come to the fore. And there are many teams better than South Korea."
Piotr Nowak, a Polish international now playing for Chicago Fire, has refuted suggestions that he has given the USA coach Bruce Arena information on the Polish players.
The United States are also opponents of the Poles in Group D.
"It wasn't like that," Nowak, a former skipper of the national side, said.
"Our Chicago Fire coach Bob Bradley helps the USA side and knows Arena very well.
"We just talked about the chances of both the teams in the World Cup and what they should do to do well.
"I didn't go to Arena to offer to work out the Polish team for him."
Polish FA chairman Listkiewicz responded: "Piotr should remember where he comes from and where he became a good player."
Meanwhile Jacek Krzynowek says he is prepared to play wherever Engel chooses.
"I'm left-footed and definitely feel better on the left side, but I am ready to play on the right flank if the coach wants me to," he told Przeglad Sportowy newspaper.
"I know I have a big chance of playing against South Korea but I'm not 100% sure of having a place in the starting XI."
Krzynowek also praised the hospitality of the co-hosts.
"I'm surprised by the friendliness of Koreans," he added.
"Their team is our group rival and here at Daejeon they greet us, wave hands and smile at us whenever they see us. I was expecting a more hostile atmosphere."