detection period: 2021-05-08 00:00-23:59 UTC
total number of suspected botnet IPs: 27518
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 25124
number of spam blocked: 0
recipient count of spam blocked: 0
The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:
| Rank | Network | # of suspected botnet IPs |
|---|---|---|
| 1 | TencentCloud | 2051 |
| 2 | TENCENT-CN | 689 |
| 3 | DIGITALOCEAN-192-241-128-0 | 663 |
| 4 | NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK | 591 |
| 5 | ALISOFT | 591 |
| 6 | VNPT-VN | 447 |
| 7 | VIETTEL-VN | 390 |
| 8 | Baidu | 386 |
| 9 | HINET-NET | 379 |
| 10 | CMNET | 292 |
The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:
| Rank | Country/Region | # of suspected botnet IPs |
|---|---|---|
| 1 | China | 7668 |
| 2 | United States | 3923 |
| 3 | India | 1548 |
| 4 | Russian Federation | 1466 |
| 5 | Viet Nam | 1238 |
| 6 | Brazil | 1223 |
| 7 | Indonesia | 679 |
| 8 | European Union | 607 |
| 9 | Mauritius | 536 |
| 10 | Mexico | 499 |
The top 10 TCP ports, ordered by the number of connection attempts received are:
| Rank | TCP port number | # of connection attempts received |
|---|---|---|
| 1 | 445 | 336332 |
| 2 | 1095 | 260151 |
| 3 | 667 | 114894 |
| 4 | 766 | 107377 |
| 5 | 267 | 97879 |
| 6 | 1293 | 97677 |
| 7 | 1999 | 95042 |
| 8 | 293 | 83573 |
| 9 | 1998 | 81486 |
| 10 | 336 | 77115 |