Fake certificates and illicit part-time job offers lurking on social media: Vietnamese undocumented overstayers called "soldiers" in slang

Japan’s immigration agency plans to expand monitoring and analysis of social media posts linked to illegal overstays and unauthorized work.

The agency is also considering creating a specialized unit to strengthen cyber patrols and enforcement.

Reports highlight cases where Vietnamese communities use coded language on SNS, and where jobs and fake IDs are traded online.

Authorities say social media is increasingly used to broker illegal labor and forged residence cards, making tighter surveillance key to prevention.