We all but handed them the keyes...
KrayG (firstname.lastname@example.org) writes:
I think I know how the Covenant found the coordinates to Earth. The people on Marathon Story Page†made†a relation between the 4th cortana letter to the Arecibo Observatory in Puerto Rico. Then they placed some†links associated with the Arecibo Observatory, more significantly, the†Arecibo message in both its binary and deciphered form.
The Covenant might have intercepted and deciphered†this message during the war against humanity. Right underneath the drawing of man, the third dot from the one representing Sol was raised up above all the other bodies.†The illustrated†man stood upon this dot, thus giving away the position of humanity's ultimate home. Too bad the scientists who made this weren't wary of the Cole Protocol or the hostile alien forces of the future. The coordinates of earth were transmitted before the Cole Protocol. This protocol only†delayed the immient invasion of Earth by the Covenant.†It was only a matter of time before the enemy found the single, unprotected, unencrypted, stray†transmission to ever disclose the location of earth. All because of one mistake from the past, we are at the mercy of the Covenant.