Conducted an Exploratory Data Analysis to spot unusual changes in activity when compared to previous events
Examined registrant details by inspecting domain information comprehensively; found several indications of users from fake domains registering for the event
After analysing the event data, it was identified that fraudulent attendees accessed the event to obtain promo codes
Assessed and identified common patterns in the domain information and user behaviour of fraudulent registrations
Devised an algorithm to lookup domain details and flag registrations that followed the identified patterns
Validated the status of flagged domains using multiple protocols
Provided a consolidated report of fraud domains to be blocked from accessing the events
Implications
Prevented fraud enrollments in real time by reporting suspicious activity during the event
Saved costs associated with misuse of promo codes
The report helped the client block further registrations from fraudulent domains
Identified multiple cases of fraud, leading to implementation of captcha validation to counter such cases in future events
Reported the implications on event metrics and helped to correct event data, enabling the client to get a true picture of event performance