Botnet Statistics [2021-05-20]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for May 2021. To get an idea of what IP is scanning the Internet currently, please watch: Daily Botnet Detection Live Streaming.)
detection period: 2021-05-20 00:00-23:59 UTC
total number of suspected botnet IPs: 31975
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 29345
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	2030
2	ALISOFT	1023
3	DIGITALOCEAN-192-241-128-0	1017
4	TENCENT-CN	684
5	NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK	640
6	VNPT-VN	576
7	VIETTEL-VN	498
8	HINET-NET	437
9	Baidu	363
10	CMNET	312

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	8332
2	United States	4639
3	Russian Federation	1828
4	India	1692
5	Viet Nam	1561
6	Brazil	1451
7	Indonesia	928
8	Thailand	758
9	European Union	662
10	Taiwan	581

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	TCP port number	# of connection attempts received
1	445	150959
2	22	53837
3	1500	38485
4	5900	37413
5	3032	35107
6	3389	32400
7	8291	31858
8	8728	30567
9	1433	30036
10	166	28566

20210521 Botnet Detection Live Streaming 1500+ zombies detected)