Method and system for security protection of account information

A system for security protection of account information, performed at a terminal computer having one or more processors and one or more memories for storing programs to be executed by the one or more processors, wherein the system comprising:

• an event detecting module, configured to detect an account input event on an accessed web page;
• an existence judging module, configured to determine, when the account input event is detected, whether a Uniform Resource Locator (URL) of the accessed web page exists in a preset secure URL list;
• a similarity calculating module, configured to calculate, if the URL of the accessed web page does not exist in the secure URL list, a page similarity between the accessed web page and a preset real web page according to both the URL and/or web page content of the accessed web page;
• and
• an account security risk alert module, configured to determine, according to the page similarity on both the URL and web page content, whether the accessed web page has a security risk, and if yes, display an account security risk alert;
• wherein the similarity calculating module is configured to realize calculating the page similarity between the accessed web page and the preset real web page according to both the URL and/or web page content of the accessed web page by the following step:
• detecting whether both the character string in the URL and the web page content of the accessed web page includes a preset keyword, and a frequency of occurrence of the preset keyword, and
• determining the page similarity according to the preset keyword and the frequency of occurrence of the preset keyword;
• wherein the event detecting module is further configured to detect a password submission event on the accessed web page;
• and
• the system further comprises a login security risk alert module, when it is determined according to the page similarity that the accessed web page has a security risk, configured to display a login security risk alert.