Xinhua News Agency, Tianjin, September 15 (Reporter Yin Siyuan) With the advent of the "5G" era, network security has become a topic of widespread concern.

Network security is not only related to national security, but also closely related to the daily life of each of us. What can we do to avoid the leakage of personal information?

How to avoid possible property losses?

You need to know these things.

Has your SIM card set a password?

  It is the habit of many people to set the power-on password and payment password on the mobile phone, but will you set a password for your SIM card?

According to Cao Jingjie, Technical Director of Tianjin of NSFOCUS Technology Group Co., Ltd., only setting a password for the mobile phone and ignoring the setting of a password for the SIM card may also cause property losses.

  Cao Jingjie said that personal information is often closely related to mobile phone numbers, and many App accounts can be retrieved or changed through verification codes.

Some criminals take advantage of this loophole and pull out the SIM card after picking up the phone, threatening your property.

"Although the mobile phone cannot be opened, you can also steal your'money bag' through the SIM card."

Have you scanned the malicious QR code?

  With the development of electronic payment, cashless payment has penetrated into everyone's life, but some criminals implanted Trojan horse viruses and phishing software into QR codes, threatening people's information security.

According to Cui Zongfu, Tianjin Technical Director of Qi'anxin Technology Group, the current malicious QR code may bring risks such as information leakage, personal and property damage, and the spread of Trojan horse viruses.

  In this regard, he suggested not to scan the QR code of unknown source at will, carefully check the relevant information after scanning the code, or download some well-known and strong security software to avoid risks.

"We must increase our security awareness, and be more precautionary when encountering a QR code of unknown origin, and do not give criminals a chance to take advantage of it." Cui Zongfu said.

Like to connect to free WiFi in public places?

Beware of being "fished"!

  Order a cup of coffee and connect to the free WiFi in the cafe to watch a show. Many young people like to relax in this way after work.

Sangfor Technology Co., Ltd. Tianjin product expert Jing Yuqing reminded that public places need to be vigilant about "fishing WiFi".

  Jing Yuqing said: "Most public places have more than one open WiFi. Some criminals induce everyone to connect by setting up mobile base stations. The information released, website access records and even login passwords will be stolen by criminals. In addition, some Malicious software will obtain the user's address book, photo album, payment information, etc. while connecting to the network. Be careful when connecting to WiFi in public places."

Is your password safe?

  "A set of passwords go to the world" is a habit of many people, but this way of setting passwords is convenient and easy to remember, but also increases the risk of personal information leakage.

According to Cui Zongfu, criminals generally try to crack user passwords in four ways, one is brute force cracking, that is, they try to crack the password with a certain frequency.

The second is to try to crack with the user's birthday and other personal information.

The third is to try to crack using weak passwords.

The fourth is to "hit the database" on other platforms based on the obtained user password.

  How to ensure the security of the setup password?

Cui Zongfu suggests not to store passwords in text. When setting passwords, try to set a "strong password" containing letters, numbers and special symbols with more than 15 digits, and reset the password regularly.

"Try not to use your birthday and name as your account password."

"Hackers" may be by your side

  "Compared with before, today's'hacker' refers to a larger scope and has a wider range of ways to obtain information." Cao Jingjie introduced that the names, addresses, and WeChat Moments we fill in when we shop online may be inadvertently Disclosure of personal privacy information at times.

  Cao Jingjie said that the purchase and sale of personal information by users occurs from time to time, and the bombardment of spam messages is also annoying.

To avoid this type of problem as much as possible, everyone needs to increase their awareness of prevention, moderately "in the circle", do not randomly click on the information provided by strangers, and try not to use their real names on the network platform.

"The'hacker' may be by your side."