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The algorithm is considered self-healing because under certain conditions it prevents an attacker from accessing the cleartext of future messages after having compromised one of the user's keys.<ref name="advanced-ratcheting"/> New session keys are exchanged after a few rounds of communication. This effectively forces the attacker to [[man-in-the-middle attack|intercept]] ''all'' communication between the honest parties, since they lose access as soon as a key exchange occurs that is not intercepted. This property was later named ''Future Secrecy'', or ''Post-Compromise Security''.<ref>{{cite journal|last1=Cohn-Gordon|first1=K.|last2=Cremers|first2=C.|last3=Garratt|first3=L.|title=On Post-compromise Security|journal=2016 IEEE 29th Computer Security Foundations Symposium (CSF)|year=2016|pages=164–178|doi=10.1109/CSF.2016.19|isbn=978-1-5090-2607-4|s2cid=5703986|url=https://ora.ox.ac.uk/objects/uuid:241da365-1c73-4b6a-826c-f122c4c1e1b8}}</ref>
== Etymology ==
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