| 摘要 |
A gateway computer 200 receives 505 original content including a call to an original function with an associated input. The gateway computer uses a content modifier unit to modify 515 the original content to include a call to a shielding function which is operable to cause the client computer to transmit 525 an instruction to a security computer 400 to inspect 545 the arguments associated with the call to the original function. The gateway computer transmits the original content to the security computer and the modified content to the client computer. Once the security computer has checked the function call input for malicious content, it sends a response to the client computer specifying whether it is safe to invoke the function call. By running the original content, the client computer may generate updated content and transmit this to the security computer to analyse any new, dynamically generated function calls. |
