You seem to be right. There is a paper about fast attacks against A5&#x2F;3, but according to the authors it doesn&#x27;t necessarily apply to real attack scenarios.<p><a href="https:&#x2F;&#x2F;eprint.iacr.org&#x2F;2010&#x2F;013" rel="nofollow">https:&#x2F;&#x2F;eprint.iacr.org&#x2F;2010&#x2F;013</a>