Multiple requests with the same Proxy-Connection header.

Multiple HTTP 401 Status Codes: This could indicate someone is repeatedly attempting to access resources that require valid credentials, possibly attempting to brute-force their way in.

Multiple requests with the same Via header.

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

Signs of Clickjacking: You might observe layered multiple HTTP requests aiming to trick users into unintended interactions.

Rapid sequence of login attempts.

It participated in Unvalidated Redirects and Forwards attacks, leading users to malicious websites via altered SSH links.

This IP belongs to Medium.

It attempted to perform a phishing attack using the IMAP server.

This IP belongs to Lowe's.

Our system logs indicate this IP has been pushing illegitimate browser plugins into our network.

This IP belongs to Nationwide.

The IP attempted to perform a NetBIOS amplification attack on the SSH server.

GET /admin: Looking for an unprotected admin page.

This IP was seen trying to perform a SIP URI Spoofing attack, falsifying the SIP URI to deceive the receiver or hide the caller's identity.

This IP belongs to Massachusetts Mutual Life Insurance.

The IP made multiple unsuccessful login attempts to the IMAP server in a short period of time.

It attempted to delete emails from the IMAP server without authorization.

This IP has participated in spreading adware-laden toolbar plugins, turning our workstations into advertising platforms.

This IP belongs to United Parcel Service.

This IP belongs to Dropbox.

The IP was flagged for performing XML External Entity attacks, exploiting improperly processed XML inputs.

The IP was involved in a traffic flooding attack, overwhelming a network's bandwidth to cause service disruption.

The malicious IP tried to depreciate the reputation of our mail server by sending out numerous spam mails.

It attempted to change file permissions on the FTP server.