This IP address has been reported a total of
50
times from
42 distinct
sources.
81.240.100.243 was first reported on
, and the most recent report was
.
In the last 60 days, the top reporter locations were:
Germany
with 13
reports;
United States of America
with 6
reports;
Hong Kong
with 4
reports.
The most common categories in these recent reports were:
Brute-Force
43
times;
SSH
32
times;
Hacking
9
times;
Web App Attack
8
times;
Port Scan
4
times;
Other
3
times.
Recent Reports
We have received reports of abusive activity from this IP address within the last week. It is
potentially still actively engaged in abusive activities.
2026-10-05T01:25:19.837697+02:00 odroidxu4 sshd[30755]: Failed password for root from 81.240.100.243 ...
show more2026-10-05T01:25:19.837697+02:00 odroidxu4 sshd[30755]: Failed password for root from 81.240.100.243 port 40614 ssh2
2026-10-05T02:09:26.281446+02:00 odroidxu4 sshd[371]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.240.100.243 user=root
2026-10-05T02:09:27.483904+02:00 odroidxu4 sshd[371]: Failed password for root from 81.240.100.243 port 37396 ssh2
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This IP address carried out 2 SSH credential attack (attempts) on 05-10-2026. For more information o ...
show moreThis IP address carried out 2 SSH credential attack (attempts) on 05-10-2026. For more information or to report interesting / incorrect findings, give me a shoutout @parthmaniar on Twitter.
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Synology DSM web login brute-force: 5 failed sign-in attempt(s) between 09:48:15 and 14:57:12 CEST o ...
show moreSynology DSM web login brute-force: 5 failed sign-in attempt(s) between 09:48:15 and 14:57:12 CEST on 2026-10-06; part of distributed low-and-slow campaign (1000+ IPs).
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Brute-Force
Web App Attack
Anonymous
Web directory scan: 10 requests in 7h 14m (Last path: '/webapi/entry.cgi?account=jmiller&api=SYNO.AP ...
show moreWeb directory scan: 10 requests in 7h 14m (Last path: '/webapi/entry.cgi?account=jmiller&api=SYNO.API.Auth&format=sid&method=login&passwd=Password1&session=FileStation&version=6').
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2026-10-05T01:25:19.837697+02:00 odroidxu4 sshd[30755]: Failed password for root from 81.240.100.243 ...
show more2026-10-05T01:25:19.837697+02:00 odroidxu4 sshd[30755]: Failed password for root from 81.240.100.243 port 40614 ssh2
2026-10-05T02:09:26.281446+02:00 odroidxu4 sshd[371]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.240.100.243 user=root
2026-10-05T02:09:27.483904+02:00 odroidxu4 sshd[371]: Failed password for root from 81.240.100.243 port 37396 ssh2
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Honeypot trap triggered: unsolicited TCP connection(s) to unused port(s) 2222 on a host running no s ...
show moreHoneypot trap triggered: unsolicited TCP connection(s) to unused port(s) 2222 on a host running no such service. There is no legitimate reason to connect to these ports.
Observed 1 connection(s) from 2026-10-04T23:03:29Z to 2026-10-04T23:03:29Z UTC.
2026-10-04T23:03:29Z tcp/2222 data: SSH-2.0-OpenSSH_8.9
Connection was blocked automatically at the firewall. Reported by an automated honeypot.
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2026-10-04T18:14:12.289081-06:00 node1.us sshd-session[3148898]: Connection closed by authenticating ...
show more2026-10-04T18:14:12.289081-06:00 node1.us sshd-session[3148898]: Connection closed by authenticating user root 81.240.100.243 port 36492 [preauth]
2026-10-04T18:16:02.537779-06:00 node1.us sshd-session[3151295]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.240.100.243 user=root
2026-10-04T18:16:05.188603-06:00 node1.us sshd-session[3151295]: Failed password for root from 81.240.100.243 port 47328 ssh2
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Oct 5 00:04:20 obsidian sshd[1965077]: error: PAM: Authentication failure for root from 81.240.100. ...
show moreOct 5 00:04:20 obsidian sshd[1965077]: error: PAM: Authentication failure for root from 81.240.100.243
Oct 5 00:12:33 obsidian sshd[1982743]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.240.100.243 user=root
Oct 5 00:12:35 obsidian sshd[1982743]: Failed password for root from 81.240.100.243 port 39004 ssh2
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