Suspicious message report processing and threat response

A computerized method for suspicious message processing and incident response, comprising:

• providing computer-executable instructions for a messaging client, the computer-executable instructions for:
• receiving a user interface action by a user indicating that a message delivered in an account associated with an individual has been identified by the user as a potential security threat;
• determining whether the delivered message is a known simulated phishing attack based on an identifier or other message characteristic of the delivered message;
• if the delivered message is determined to be a known simulated phishing attack based upon the identifier or other message characteristic of the delivered message, then providing a graphically displayed feedback confirming that the delivered message was a simulated phishing attack;
• and if the delivered message is determined not to be a known simulated phishing attack based upon the identifier or other message characteristic of the delivered message, then transmitting a copy of the delivered message to a detection platform;
• providing computer-executable instructions for a threat detection platform, the computer-executable instructions for:
• receiving the transmitted copy of the message at the threat detection platform;
• electronically storing a pattern as a rule for determining whether a body of the received message or an attachment of the received message contains a defined textual or binary pattern associated with a security threat;
• processing the received message according to the electronically stored rule to determine whether the body of the received message or an attachment of the received message contains the defined textual or binary pattern associated with the security threat;
• assigning a further processing action to the received message based upon the determination of whether the received message contains the defined textual or binary pattern;
• associating the received message with a message group, the message group being defined by having at least the defined textual or binary pattern in common with the received message;
• displaying a graphical representation of the message group, each of the group of messages displayed having been determined not to be a known simulated phishing attack based on the identifier or other message characteristic of the delivered message;
• and further comprising removing one or more previously delivered messages from messaging accounts associated with multiple users based on a matching of at least a portion of header information of the delivered message or at least a portion of metadata of the delivered message with the one or more previously delivered messages from the messaging accounts associated with the multiple users.