detection period: 2021-04-22 00:00-23:59 UTC
total number of suspected botnet IPs: 29667
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 27301
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 | 2247 |
| 2 | TENCENT-CN | 809 |
| 3 | NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK | 717 |
| 4 | DIGITALOCEAN-192-241-128-0 | 671 |
| 5 | ALISOFT | 663 |
| 6 | VNPT-VN | 522 |
| 7 | VIETTEL-VN | 428 |
| 8 | HINET-NET | 428 |
| 9 | Baidu | 379 |
| 10 | CMNET | 288 |
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 | 8200 |
| 2 | United States | 4179 |
| 3 | India | 1758 |
| 4 | Russian Federation | 1516 |
| 5 | Viet Nam | 1408 |
| 6 | Brazil | 1324 |
| 7 | Indonesia | 1079 |
| 8 | European Union | 743 |
| 9 | Thailand | 650 |
| 10 | Taiwan | 536 |
The top 10 TCP ports, ordered by the number of connection attempts received are:
| Rank | TCP port number | # of connection attempts received |
|---|---|---|
| 1 | 445 | 343714 |
| 2 | 406 | 183309 |
| 3 | 710 | 176766 |
| 4 | 407 | 174023 |
| 5 | 404 | 172178 |
| 6 | 403 | 171587 |
| 7 | 708 | 169698 |
| 8 | 323 | 169388 |
| 9 | 424 | 166313 |
| 10 | 402 | 163025 |
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