detection period: 2021-04-16 00:00-23:59 UTC
total number of suspected botnet IPs: 27709
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 25654
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 | 1362 |
| 2 | ALISOFT | 679 |
| 3 | DIGITALOCEAN-192-241-128-0 | 656 |
| 4 | VNPT-VN | 539 |
| 5 | TENCENT-CN | 498 |
| 6 | HINET-NET | 491 |
| 7 | VIETTEL-VN | 490 |
| 8 | NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK | 434 |
| 9 | BSNLNET | 392 |
| 10 | Baidu | 346 |
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 | 6855 |
| 2 | United States | 4084 |
| 3 | India | 1971 |
| 4 | Russian Federation | 1549 |
| 5 | Viet Nam | 1503 |
| 6 | Brazil | 1320 |
| 7 | Indonesia | 753 |
| 8 | Thailand | 598 |
| 9 | Taiwan | 593 |
| 10 | South Korea | 483 |
The top 10 TCP ports, ordered by the number of connection attempts received are:
| Rank | TCP port number | # of connection attempts received |
|---|---|---|
| 1 | 1024 | 522244 |
| 2 | 445 | 373887 |
| 3 | 232 | 190143 |
| 4 | 231 | 184267 |
| 5 | 230 | 144500 |
| 6 | 227 | 107405 |
| 7 | 127 | 107032 |
| 8 | 427 | 105537 |
| 9 | 627 | 101380 |
| 10 | 327 | 95042 |
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