How decryption helped beat the Nazis, and what it means for infosec today paid ExtraHop
Many intercepted messages had been encrypted using the most sophisticated algorithms available at the time, and the encryption keys were changed as frequently as every day. Because Allied codebreaking and decryption efforts were too slow in the early years of the war, cracking those codes yielded information that became irrelevant almost as soon as it was gleaned.
Thus, after war broke out, Polish and British cryptanalysts were responsible for the bulk of attempts to decrypt intercepted Axis communications. The first major breakthrough had come from the Polish in 1932, well before war even broke out. They were able to decrypt the German encryption machine Enigma using an electromechanical device called a bombe to cycle through potential solutions more rapidly than a human could manage.
This question is rarely asked, and in fact may seem ridiculous now, but it’s the exact same question that is coming to a head in the infosec space today—and it shares the same answer: message content matters. Here's one huge difference. NDR isn't trying to decrypt giant intercepted flows of traffic from military enemies, or even the public internet. NDR is squarely aimed at the East-West corridor inside of large, complex enterprise networks, where cyberattackers thrive once they've surpassed perimeter defenses. Encrypting this traffic is important to prevent those attackers from stealing sensitive data. Safely decrypting the data for security monitoring is equally important.
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