Refer them to the DOJ indictment and CISA advisory https://www.justice.gov/opa/pr/four-chinese-nationals-working-ministry-state-security-charged-global-compute

Refer them to the DOJ indictment and CISA advisory https://www.justice.gov/opa/pr/four-chinese-nationals-working-ministry-state-security-charged-global-computer-intrusion https://www.justice.gov/opa/pr/four-chinese-nationals-workin... https://us-cert.cisa.gov/ncas/alerts/aa21-200a https://us-cert.cisa.gov/ncas/alerts/aa21-200a