Cybersecurity Awareness Week From September 15 to 21, 2025, it is the National Cybersecurity Awareness Week. The theme is “Cybersecurity for the People, Cybersecurity by the People”. The cyberspace has long been deeply integrated into our daily work and life, but its security risks are everywhere. A careless click or a simple password can pose … Read more
In today’s world, our devices are more closely connected than ever before. For example, we can remotely control home appliances such as air conditioners, lamps, and refrigerators. However, it is crucial to protect IoT devices and ensure the security of personal identity information. Today, I will share 6 steps to protect the privacy of IoT … Read more
Common Linux Commands – Part 2 2. Explanation of File Contents /etc/passwd # Directory storing user filesroot:x:0:0:root:/root:/bin/bashgdm:x:42:42::/var/lib/gdm:/sbin/nologin# Explanation:1 root=Username2 x=Placeholder for user password stored in /etc/shadow file3 0=UID User account, 0 is root, 1-499(999) are system accounts, 500(1000)-65535 are regular accounts4 0=GID User group5 root=Account description for notes6 /root=User home directory7 /bin/bash=Default shell script for … Read more
Core Management Tool: <span>chage</span> Command <span>chage</span> (change age) is a command specifically used to modify user password and account expiration information. It provides more granular control than the <span>passwd</span> command. 1. View Current Password Policy To view the current password expiration settings for a user (for example, user <span>zhangsan</span>), use the <span>-l</span> option: sudo chage … Read more
Nowadays, Wi-Fi has become a necessity in our lives.However, you have probably seen many news stories like this:Hackers stealing personal information through home Wi-Fi, causing privacy breaches and even financial losses.You might wonder, is it really that easy for this to happen, or is there a way to prevent your own Wi-Fi from being stolen? … Read more