1843
The data includes user email addresses and passwords hashed with the notoriously weak MD5 algorithm , meaning hackers will likely be able to obtain a number of users ' plaintext passwords as well .
 ( data breach: obtain,  hackers: attacker, plaintext passwords: compromised data, users: victim) 
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:
 ( data breach: obtain,  hackers: attacker, plaintext passwords: compromised data, users: victim) 