3431
® In a follow - up statement , WhatsApp denied accusations that it had inserted what amounted to a backdoor in its messaging code : The Guardian posted a story this morning claiming that an intentional design decision in WhatsApp that prevents people from losing millions of messages is a “ backdoor ” allowing governments to force WhatsApp to decrypt message streams .
 ( discover vulnerability: posted,  The Guardian: discoverer, this morning: time) 
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:
 ( discover vulnerability: posted,  The Guardian: discoverer, this morning: time) 