This is a generic name for attacks where the user is trying to be tricked to enter confidential information via email forms or fake web pages.
Typically these are attempts to get banking or credit card information.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.