Investigating Black-Market Jobs on Social Networking Service

In this study, we investigate black market job advertisements on social networking services (SNS) through cross-platform observation of popular SNSs. Our findings reveal that black market job recruitment often begins with SNS posts designed to attract victims. Once a victim contacts the attackers via direct message (DM) or their public SNS account, the application process for the black market job is initiated, or they are redirected to fraudulent websites where they may fall victim to money transfer scams. Additionally, our study explores the relationship between accounts that post black-market job advertisements and their activity patterns.