This IP address has been reported a total of
58
times from
40 distinct
sources.
157.66.48.107 was first reported on
, and the most recent report was
.
In the last 60 days, the top reporter locations were:
United States of America
with 14
reports;
Canada
with 11
reports;
Germany
with 6
reports.
The most common categories in these recent reports were:
Port Scan
45
times;
Email Spam
13
times;
Brute-Force
11
times;
Hacking
7
times;
Bad Web Bot
1
time;
Other
4
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.
(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: ...
show more(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-10-07 00:36:45 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=demo)
2026-10-07 00:37:49 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=demo)
2026-10-07 00:37:59 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=demo)
2026-10-07 00:37:59 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=demo)
2026-10-07 01:15:04 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=luck)
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(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: ...
show more(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-10-06 23:20:03 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=account)
2026-10-06 23:21:07 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=account)
2026-10-06 23:21:16 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=account)
2026-10-06 23:21:17 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=account)
2026-10-06 23:58:39 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=access)
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(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: ...
show more(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-10-06 22:01:23 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=server)
2026-10-06 22:02:25 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=server)
2026-10-06 22:02:34 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=server)
2026-10-06 22:02:35 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=server)
2026-10-06 22:40:41 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=data)
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(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: ...
show more(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-10-06 20:44:59 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=informix)
2026-10-06 20:46:00 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=informix)
2026-10-06 20:46:08 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=informix)
2026-10-06 20:46:09 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=informix)
2026-10-06 21:23:19 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=oracle8)
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Email server access attempt, possible brute force or scan. | Port: 25 | Proto: TCP | Location: Vietn ...
show moreEmail server access attempt, possible brute force or scan. | Port: 25 | Proto: TCP | Location: Vietnam, N/A
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(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: ...
show more(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-10-06 19:26:22 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=oracle)
2026-10-06 19:27:23 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=oracle)
2026-10-06 19:27:32 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=oracle)
2026-10-06 19:27:33 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=oracle)
2026-10-06 20:06:01 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=sybase)
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UFW blocked a suspicious connection attempt to a closed or denied port. This activity is commonly as ...
show moreUFW blocked a suspicious connection attempt to a closed or denied port. This activity is commonly associated with port scanning, service discovery, or automated internet probing. Technical: source_ip=157.66.48.107; proto=TCP; source_port=59866; target_port=25
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(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: ...
show more(smtpauth) Failed SMTP AUTH login from 157.66.48.107 (VN/Vietnam/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-10-06 18:06:52 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=oracle)
2026-10-06 18:07:57 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=oracle)
2026-10-06 18:08:06 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=oracle)
2026-10-06 18:08:06 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=oracle)
2026-10-06 18:46:44 login authenticator failed for (User) [157.66.48.107]: 535 Incorrect authentication data (set_id=support)
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Oct 7 02:35:27 mail postfix/smtpd[7306]: disconnect from unknown[157.66.48.107] ehlo=1 auth=0/1 qui ...
show moreOct 7 02:35:27 mail postfix/smtpd[7306]: disconnect from unknown[157.66.48.107] ehlo=1 auth=0/1 quit=1 commands=2/3
Oct 7 03:32:20 mail postfix/smtpd[7545]: disconnect from unknown[157.66.48.107] ehlo=1 auth=0/1 quit=1 commands=2/3
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