3471
" At [ child pornography site ] we have always had a big JavaScript warning if you have it enabled , " one user on a dark web child abuse site wrote in December of last year .
 ( discover vulnerability: warning,  a big JavaScript: vulnerability, we: discoverer, child pornography site: vulnerable system) 
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: warning,  a big JavaScript: vulnerability, we: discoverer, child pornography site: vulnerable system) 