Baidu Safety Center is a free security service launched by Baidu. It needs to install a plug-in online for use, which can detect your computer system online and has practical functions such as free online virus checking, web anti-hanging horse, U disk virus immunity, system optimization, malicious software cleaning, and system vulnerability repair. After installing the plug-in and trying it out, I found that the browser would often crash, so I had to uninstall it. It seems that Baidu Safety Center itself still has some problems and is not very friendly to the Vista system. Please be cautious if you are a Vista user.