detection period: 2021-02-17 00:00-23:59 UTC
total number of suspected botnet IPs: 37575
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 34501
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 | 1971 |
| 2 | TENCENT-CN | 743 |
| 3 | VNPT-VN | 696 |
| 4 | HINET-NET | 677 |
| 5 | DIGITALOCEAN-192-241-128-0 | 655 |
| 6 | NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK | 587 |
| 7 | VIETTEL-VN | 509 |
| 8 | VE-CSVE-LACNIC | 477 |
| 9 | KORNET | 470 |
| 10 | Baidu | 411 |
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 | 8427 |
| 2 | United States | 4243 |
| 3 | India | 2659 |
| 4 | Russian Federation | 2091 |
| 5 | Brazil | 1804 |
| 6 | Viet Nam | 1679 |
| 7 | Indonesia | 1124 |
| 8 | Taiwan | 894 |
| 9 | Thailand | 807 |
| 10 | South Korea | 785 |
The top 10 TCP ports, ordered by the number of connection attempts received are:
| Rank | TCP port number | # of connection attempts received |
|---|---|---|
| 1 | 445 | 301355 |
| 2 | 22 | 74764 |
| 3 | 1433 | 43500 |
| 4 | 23 | 40133 |
| 5 | 3040 | 39671 |
| 6 | 66 | 30820 |
| 7 | 1122 | 26943 |
| 8 | 1022 | 26397 |
| 9 | 1234 | 19900 |
| 10 | 3344 | 15652 |
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