Interpreting Four Misunderstandings of "online security"

The Internet is actually a world that comes and goes. You can easily connect to your favorite site, while other people, such as hackers, can easily connect to your machine. In fact, many machines accidentally leave a "backdoor" in the machine and system due to their poor online security settings, which is equivalent to opening a door for hackers. The more time you spend surfing the Internet, the more likely someone else will intrude into the machine through the network. If hackers find security vulnerabilities in your settings, they will launch attacks against you, which may be harassment, such as reducing your speed or causing your machine to crash; it may also be more serious, such as opening your confidential files, stealing passwords and credit card passwords. However, many people disagree, because they still have four misunderstandings in terms of Network Security:

Misunderstanding 1: I am not connected to other networks, so I am safe. Yes, you need to connect to the INTERNET, but the independent machines that can access the INTERNET, compared with machines in a commercial network center, the network protocols used are still some or even all the same, A commercial network center machine may also have a public firewall or dedicated security personnel. In contrast, some personal machines used for home, office, and small companies are actually very open portals, and they are completely incapable of preventing hackers. This kind of threat is very realistic: If you use cable modem or DSL to connect to the Internet for a long time, there may be 2-4 mean hackers trying to attack you in a day.

Misunderstanding 2: I use Dial-Up to access the Internet, so my machine is safe. Each time you start to dial up the Internet, the IP address you use will be different, that is, the dynamic IP address, so compared with the static IP users. It is very difficult for hackers to find you, but some hacker software has developed to be able to scan tens of thousands of IP addresses one by one within one hour, so as long as hackers use these tools, even dial-up Internet users may be attacked.

Misunderstanding 3: I use anti-virus software, so I am safe.

A good virus software is indeed an essential part of online security, but it is also a small part. It can protect you by detecting viruses and similar problems, but it is powerless to guard against hackers and malicious "legal" programs.

Misunderstanding 4: I use the firewall, so I am very secure.

Firewall is very useful, but if your machine always uses some insecure methods to receive and send data, and you only rely on some additional programs to provide security, this means putting all the eggs in one basket. Once the firewall software has bugs or vulnerabilities, you are very dangerous. In addition, the firewall has no defense capabilities for software such as viruses, especially those programs that send or extract data to or from your machine maliciously. Finally, some firewall software may also help, because their vendors introduce the features of their products in the advertisement, which may lead to attacks targeting their vulnerabilities.