A top Belgian security official has warned that ISIS terrorists are using the PlayStation 4 gaming console to send messages to one another — a method of communication that is hard to monitor.

“PlayStation 4 is even more difficult to keep track of than WhatsApp,” Belgian federal home affairs minister Jan Jambon said, referring to the cross-platform mobile messaging system for smartphones and BlackBerry devices.

More fighters have joined ISIS from Belgium, per capita, than from any other Western nation.

Jambon had earlier described Brussels as a weak link in the fight against terror, according to the website Quartz.

“The thing that keeps me awake at night is the guy behind his computer, looking for messages from [ISIS] and other hate preachers,” he said in a recent debate.

PlayStation 4 was also implicated in an ISIS plot in June, when an Austrian teen was arrested for downloading bomb plans to the console.

​New York Police Commissioner Bill Bratton on Sunday said the Paris terrorists used encryption devices to elude eavesdropping from authorities, and the Sony gaming console fits that profile.