Feb 04, 2026 • ESET WeLiveSecurity
OfferUp scammers are out in force: Here’s what you should know
The article highlights a surge in fraudulent activity targeting users of the OfferUp mobile marketplace application. As the platform's user base expands,...
Executive Summary
The article highlights a surge in fraudulent activity targeting users of the OfferUp mobile marketplace application. As the platform's user base expands, malicious actors are exploiting the environment to conduct various scams against genuine users. While specific technical indicators or named threat groups are not identified, the trend indicates a significant risk of financial loss and personal data compromise for individuals engaging in transactions. The primary threat vector involves social engineering tactics where scammers pose as legitimate buyers or sellers. Users are advised to exercise heightened vigilance when communicating with unknown parties. Mitigation strategies include verifying user identities, avoiding off-platform payments, and reporting suspicious behavior directly to the application administrators. This situation underscores the growing challenge of maintaining trust in peer-to-peer marketplace ecosystems amidst increasing cybercriminal interest in consumer-facing platforms.
Summary
The mobile marketplace app has a growing number of users, but not all of them are genuine. Watch out for these common scams.
Published Analysis
The article highlights a surge in fraudulent activity targeting users of the OfferUp mobile marketplace application. As the platform's user base expands, malicious actors are exploiting the environment to conduct various scams against genuine users. While specific technical indicators or named threat groups are not identified, the trend indicates a significant risk of financial loss and personal data compromise for individuals engaging in transactions. The primary threat vector involves social engineering tactics where scammers pose as legitimate buyers or sellers. Users are advised to exercise heightened vigilance when communicating with unknown parties. Mitigation strategies include verifying user identities, avoiding off-platform payments, and reporting suspicious behavior directly to the application administrators. This situation underscores the growing challenge of maintaining trust in peer-to-peer marketplace ecosystems amidst increasing cybercriminal interest in consumer-facing platforms. The mobile marketplace app has a growing number of users, but not all of them are genuine. Watch out for these common scams. The mobile marketplace app has a growing number of users, but not all of them are genuine. Watch out for these common scams.