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The case of the missing code
The answer to this question turns out to be a highly personal one, a matter of individual psychology and interest rather than a reasoned decision based on collective safety and the immutable laws of math. Ask security types, or people who make software to aid security types, and they say that steganography is a grave threat to our safety. Defenders of steganography, and its cousin cryptography, take the opposite view. These are people who become easily exercised over the prospect of the government monitoring the Web, and they say that if researchers haven't found secret messages, the messages are likely not there. But amid this politicking, one important question tends to get left by the wayside: if steganography is, or eventually becomes, the preferred tool of terrorists, can we ever thwart it? According to many experts, the answer is probably no.
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