1730
The hacking group , called APT10 , used custom malware and spear - phishing attacks to gain access to victims ' systems .
 ( phishing: spear - phishing attacks,  APT10: attacker, custom malware: tool, The hacking group: attacker, gain access to victims ' systems: 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: spear - phishing attacks,  APT10: attacker, custom malware: tool, The hacking group: attacker, gain access to victims ' systems: attack pattern) 