https://www.theregister.co.uk/2019/09/19/student_visa_brexit_fears_scam/

Scammers are exploiting Chinese students' Brexit fears by targeting them with phishing emails claiming their visas could be revoked, threat intel researchers say.

The swindle, a latter-day variation on an age-old theme, consists of presenting a threat to students' immigration status "and uses various techniques to extract sizeable payments from the victims", according to Malwarebytes.