detection period: 2025-10-21 00:00-23:59 UTC
total number of suspected botnet IPs: 21681
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 20460
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 | MSFT | 1534 |
| 2 | AL-3 | 1182 |
| 3 | GOOGLE-CLOUD | 1006 |
| 4 | PAN-22 | 953 |
| 5 | ASEPL-SG | 771 |
| 6 | CMNET | 686 |
| 7 | VOLCANO-ENGINE | 532 |
| 8 | UCLOUD-HK | 459 |
| 9 | ALISOFT | 429 |
| 10 | CENSY | 382 |
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 | United States | 8293 |
| 2 | China | 4999 |
| 3 | Singapore | 1000 |
| 4 | Hong Kong | 623 |
| 5 | United Kingdom | 607 |
| 6 | Indonesia | 438 |
| 7 | Germany | 355 |
| 8 | India | 345 |
| 9 | France | 335 |
| 10 | South Korea | 331 |
| Rank | TCP port number | # of connection attempts received |
|---|---|---|
| 1 | 5900 | 149647 |
| 2 | 56874 | 58764 |
| 3 | 2904 | 52934 |
| 4 | 1499 | 48613 |
| 5 | 5902 | 43217 |
| 6 | 5022 | 42766 |
| 7 | 9999 | 27112 |
| 8 | 5901 | 23542 |
| 9 | 5903 | 21338 |
| 10 | 22 | 19775 |
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