1e41f4b71Sopenharmony_ci# Advanced Security Mode 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ciThe advanced security mode is designed for specific high-risk users. By restricting basic functions of the device, the advanced security mode provides higher security and prevents targeted network attacks. When the advanced security mode is enabled, ArkWeb reduces the attack surface by disabling some HTML5 features. 4e41f4b71Sopenharmony_ci 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ciThe disabled features are as follows: 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci1. The WebAssembly capability. 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci2. The WebGL and WebGL2 capability. 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci3. The preview function of PDF viewer. 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci4. The MathML capability. 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci5. The speech recognition capability of Web speech API . 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci6. The RTCDataChannel API. 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci7. The MediaDevices.getUserMedia API. 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci8. The Service Worker capability. 23e41f4b71Sopenharmony_ci 24e41f4b71Sopenharmony_ci9. Non-proxy UDP traffic. (To prevent WebRTC from disclosing real source IP addresses.) 25e41f4b71Sopenharmony_ci 26e41f4b71Sopenharmony_ci10. The JIT capability. 27