The IP attempted to login to the Postfix server with an invalid username.

Signs of Password Spraying: Logs showing single failed login attempt for large numbers of users.

It attempted to send phishing emails from the Mail server.

The IP was involved in a war dialing attack, dialing a large number of phone numbers to find modems, fax machines, and unsecured VoIP devices.

The IP has been tagged as a source for data mining spyware, aiming to gather personal information.

The malicious IP was involved in a credential stuffing attack, using stolen username-password combinations to gain unauthorized access.

GET /modules/productpageadverts/uploadimage.php: This is related to a known vulnerability in the Prestashop module productpageadverts.

Our system blocked an attempted Code Injection attack from this IP.

This IP belongs to the University of California, Berkeley.

We traced a significant increase in the distribution of malicious fake security software to the reported IP.

The IP engaged in a mail relay attack, using our server to send spam.

The IP attempted the notorious Shellshock vulnerability, which could pose a severe threat to our server's resources.

The IP was reported for spamming activities, sending unsolicited emails or messages that often contain phishing links or malware.

Repeated failed attempts to access application interfaces or ports that are typically not open to the public.

Attempts to access the server using outdated or insecure protocols, which can indicate an attacker is trying to exploit known vulnerabilities.

It attempted to use the FTP server to store illegal content.

Server Side Template Injection: Suspicious input patterns aimed at coercing server-side parsers to execute injected code.

It attempted to send emails from the Postfix server to a large number of recipients.

Multiple requests with the same Referer header.

This malicious IP was reported for attempting to download files from the FTP server without authorization, potentially stealing sensitive data.

It attempted to login to the IMAP server with an invalid password.

Repeated attempts to access the server using encrypted or obfuscated data, which can indicate an attacker is trying to hide their activities.

Unusual increase in server CPU usage.

This IP belongs to CenturyLink.

Multiple attempts to access the server using credentials of inactive or seldom-used accounts.