To protect the security of the computer, in addition to anti-virus software, another means is a firewall. The firewall has two main purposes: 1) To resist the attack of the external network on the local computer; 2) To effectively control the access of the local program to the Internet. It's a pity that Windows' built-in firewall has a single function and poor usability, so there are a large number of third-party firewall programs. Of course, all third-party firewalls implement corresponding functions based on the operating mechanism of Windows' built-in firewall.

In order to erase a USB drive, some users may just delete files or format it. However, neither simple deletion nor formatting can completely erase files, because many data recovery programs can easily and quickly recover deleted or formatted files. Therefore, computer users need to be careful when discarding or selling USB drives, as a large amount of data involving personal privacy and even company secrets can be found on many recycled used flash drives.

Everyone has more or less personal privacy on his phone and computer. In order to ensure that our privacy is not leaked, we can use the app lock on mobile phone to ensure that we need to provide passwords when accessing certain apps. But on the computer side, as long as the computer is logged in, anyone can access any file and run any program on it. This may lead to the disclosure of personal privacy and important information. In this case, AskAdmin can help you.

Cerbero is an advanced, professional malware classification and file security analysis tool for Windows, Mac and Linux platforms. It was designed to inspect the structure, code and many other things of dozens of file formats for reversing, malware triage, forensics or software development purpose.

PortExpert is a free system process port monitoring and management tool, developed by KC Softwares from France. Its purpose is simply to monitor any programs connected to the Internet in real time, letting you know which ports and what IP addresses they are connected to. It is essentially equivalent to dynamically executing the "netstat /ano" command in the CMD.