I think people here will be <i>really</i> interested to know that this is an active technique in the &quot;quantum hacking&quot; world as well. As you probably know, quantum mechanics very often offers <i>100% security</i> about creating shared keys which nobody else knows -- but there is a very active physics subfield called &quot;quantum hacking&quot; which says &quot;well, but you&#x27;re assuming that your device perfectly embodies these equations and the reality is it doesn&#x27;t, so let&#x27;s see what happens if we drive up the parameters to a non-ideal regime, can we run a Man-in-the-Middle attack then without you both knowing about it?&quot;<p>Here&#x27;s for example a pop-science article about using camera zapping on Vice Motherboard:<p><a href="http:&#x2F;&#x2F;motherboard.vice.com&#x2F;read&#x2F;a-new-quantum-hack-just-burns-a-hole-right" rel="nofollow">http:&#x2F;&#x2F;motherboard.vice.com&#x2F;read&#x2F;a-new-quantum-hack-just-bur...</a><p>The solution to this was to include a filter which prevented oversaturation at the target wavelengths, but it turns out you could just blast it with some other wavelengths...<p><a href="http:&#x2F;&#x2F;www.technologyreview.com&#x2F;view&#x2F;530181&#x2F;the-next-battleground-in-the-war-against-quantum-hacking&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.technologyreview.com&#x2F;view&#x2F;530181&#x2F;the-next-battleg...</a><p>So it&#x27;s a really fun-looking discipline, lots of groups hiring postdocs for it etc.