 | 0APT | | |
| 0APT Ransomware-as-a-Service | | |
| 0ktapus | | |
| 10-person fraud ring (Togo) | | |
| 1.php Group | | |
| 2992 | | |
| 303 | | |
| 3AM | | |
| 3AM (ThreeAM) | | |
| 404 | | |
| 404 TDS | | |
| 4BID | | |
| 545 | | |
| 555 | | |
| 6996 | | |
| 764 | | |
| 764 Inferno | | |
| 764 network | | |
| 764 network (The Com) | | |
| 76service | | |
| 7997 | | |
| 8220 | | |
| 8220 Gang | | |
| 85th GTsSS (85th Main Special Service Center) | | |
| 8884 | | |
| 8base | | |
| 8Base | | |
| A0Backdoor campaign | | |
| Ababil of Minab | | |
| abcXXX | | |
| Academic Serpens | | |
| AccountDumpling | | |
| AccountDumpling operation | | |
| ACTINIUM | | |
| Activity Groups (AGs) | | |
| Advanced Persistent Threat (APT) | | |
| Advanced Persistent Threat (APT) linked to China | | |
| Advanced persistent threats (APTs) | | |
| Advanced Persistent Threats (Operation Aurora) | | |
| AgainstTheWest | | |
| Agenda (Qilin) | | |
| Agent Serpens | | |
| Aggah | | |
| Agonizing Serpens | | |
| Agrius | | |
| Agrius intrusion set | | |
| AIRPIPE | | |
| Aisuru | | |
| AISURU | | |
| Aisuru intrusion set | | |
