US Patent 9178904 Systems and methods for detecting malicious browser-based scripts

A computer-implemented method for detecting malicious browser-based scripts may include (1) identifying an attempt by a web browser to access sensitive information stored on a server, (2) identifying a web browser script installed in the web browser, (3) calculating a signature hash for the web browser script, (4) querying, using the signature hash, a browser script signature database that associates web browser script signature hashes with script security indicators, (5) receiving, in response to querying the browser script signature database, a script security indicator associated with the signature hash, and (6) applying, based on the script security indicator associated with the web browser script, a script security policy associated with the web browser script. Various other methods, systems, and computer-readable media are also disclosed.