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What is a side-channel attack?

Gathering information about a system from its physical effects, like electromagnetic radiation.

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  1. Sending phishing emails from the side
  2. Gathering information about a system from its physical effects, like electromagnetic radiation ✔
  3. Attacking a system through a side door

Why: Side-channel attacks use physical clues, such as electromagnetic emissions, to guess a system's internal state.

Huh, didn't know that: Side-channel attacks use physical clues, such as electromagnetic emissions, to guess a system's internal state.

The dad joke
Side-channel attacks are like reading a book by its cover, but with physics.
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References

Answer: Gathering information about a system from its physical effects, like electromagnetic radiation. Side-channel attacks use physical clues, such as electromagnetic emissions, to guess a system's internal state.

  1. Computer security en.wikipedia.org/wiki/Computer_security
    In Side-channel attack scenarios, the attacker would gather such information about a system or network to guess its internal state and as a result access the information which is assumed by the victim to be secure.
    Checked 2026-11-07.

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