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That scam implied that WhatsApp itself was making the offer in order to keep you active on WhatsApp without using any airtime or data from your own mobile provider network .
 ( phishing: That scam,  WhatsApp: trusted entity, making the offer: attack pattern) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( phishing: That scam,  WhatsApp: trusted entity, making the offer: attack pattern) 