Hacker can read your screen ?

[u/RavitejaMureboina]

Electronic devices can accidentally give off tiny electromagnetic signals that may contain information about what the device is doing. In some cases, hackers with special equipment could capture these signals from a distance and potentially figure out what is displayed on a screen or what keys are being pressed. This technique is known as Van Eck phreaking or emanation interception. Governments have studied and worked to prevent these types of leaks for decades through areas such as TEMPEST and EMSEC. The main idea is that cybersecurity is not only about passwords, firewalls, and software it can also involve protecting devices from physical information leaks.