Mindless_Consumer

Mindless_Consumer t1_jbcs38u wrote

Yea. So match the signal to that of a local star or some other natural phenomenon.

The point is - if this is impossible which it may be. Long communication in a hostile galaxy may be impossible. If it is possible an explanation for not detecting signals is they are hidden and undetectable.

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Mindless_Consumer t1_jbcnplo wrote

If true - its actually a big deal.

Consider a hostile universe and we need to send a signal across the galaxy, the presence of a signal alone is enough information to get you xenocided. Being about to mask the existence of a signal will be vital.

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Mindless_Consumer t1_jbc3kej wrote

Most (all?) Steganogeaphy can be detected.

For example, one technique is to hide data in a jpeg. Open the file it looks like a regular image. Run the binary through a decryption process, get a secret message.

We may not be able to crack the message. But we can find out it is there. Then hit you until you decrypt it.

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