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<p>In a <a
href="https://www.forensicfocus.com/stable/wp-content/uploads/2011/08/cold_boot_attack_for_forensiscs1.pdf">research
report from 2011</a>, Defense Research and Development Canada concluded that
cold boot attacks can be useful in some cases to acquire data in memory but are
not a panacea and have many drawbacks dictated by the laws of physics, which
cannot be overcome by the technique. The authors recommend to only use cold
boot attacks as a last resort when all other avenues have been exhausted.</p>
 
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<p>As far as we know, cold boot attacks are not a common procedure for
data recovery.</p>
 
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<div class="attack">
 
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Moreover, an attacker having physical access to the computer *while Tails is running* can recover data from RAM as well. To avoid that, learn the different methods to [[shutdown Tails|doc/first_steps/shutdown]] rapidly.
 
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This can be achieved using a technique called [[!wikipedia cold boot attack]]. To prevent such attacks, the data in RAM is overwritten by random data when you shut down Tails.
 
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After a computer is powered off, the data in RAM disappears rapidly, but it can remain in RAM up to several minutes after shutdown. An attacker having access to a computer before the data in RAM disappears completely could recover important data from your session.
 
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While using a computer, all the data manipulated is written temporarily in [[!wikipedia Random-access_memory desc="RAM"]]: texts, saved files, but also passwords and encryption keys. The more recent the activity, the more likely it is for the data to still be in RAM.
 
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[[!meta title="Protection against cold boot attacks"]]
 
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File “wiki/src/doc/advanced_topics.bg.po” was added. 03/06/2025
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[[!inline pages="doc/advanced_topics.index" raw="yes" sort="age"]]
 
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[[!meta title="Advanced topics"]]
 
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File “wiki/src/doc/about/license.bg.po” was added. 03/06/2025
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[[Command Line|https://thenounproject.com/icon/command-line-39108]]: Public Domain, by Daniel Gamage.
 
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[[Info|https://thenounproject.com/term/info/808461]]: Creative Commons — Attribution, by icongeek.
 
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[[Survey|https://thenounproject.com/term/survey/1296072]]: Creative Commons — Attribution, by unlimicon.
 
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[[Love|https://thenounproject.com/term/love/218846/]]: Creative Commons — Attribution, by Thomas Helbig.
 
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[[Laptop|https://thenounproject.com/term/laptop/6729]]: Public Domain, by Jean Yashu.
 
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[[Smart Phones|https://thenounproject.com/term/smartphone/25790]]: Creative Commons — Attribution, by Pham Thi Dieu Linh.
 
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[[Printer|https://thenounproject.com/term/printer/146674]]: Creative Commons — Attribution, by Diego Naive.
 
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[[Time|https://thenounproject.com/term/time/6732]]: Creative Commons — Attribution, by Richard de Vos.
 
03/06/2025

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