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(also log file)

Log definition

A log is a computer-generated file recording events, such as online activities, system errors, or user communication. Logs are helpful to determine why a device or app has crashed, but they can also reveal a lot of sensitive information about the user.

Real log examples

Windows: Windows devices automatically generate crash logs when they shut down unexpectedly, revealing the circumstances and your actions at the time of the crash.

Messenger: Messenger creates chat logs of all your conversations and stores them on Meta servers. Your chat history can then be viewed online or downloaded to your device.

Further reading

Ultimate digital security