| Secret message | 14 |
| Programmer's creation | 25 |
| Programmer's concern | 24 |
| Program lines | 13 |
| Morse or zip | 12 |
| Morse or area | 13 |
| Morse creation | 14 |
| Disguised language | 18 |
| Building contractor's concern | 33 |
| Bar closing? | 12 |
| Zip or area | 11 |
| Word with Morse or area | 23 |
| Word with fire or area | 22 |
| Word with bar or zip | 20 |
| Word with area or zip | 21 |
| What the four circled answers "crack" | 47 |
| What programmers write | 22 |
| The "C" in U.P.C. | 27 |
| Secret signal | 13 |
| Programmers' writing | 24 |
| Part of UPC | 11 |
| One if by land, two if by sea, e.g. | 35 |
| Morse, for one | 14 |
| Medium for secret messages | 26 |
| It's broken after some thought | 34 |
| It takes brains to crack it | 27 |
| Hacker's forte | 18 |
| Genetic or dress follower | 25 |
| Cryptologist's interest | 27 |
| Cryptogram, e.g. | 16 |
| Cracker's target | 20 |
| Contractor's concern | 24 |
| Camouflaged communication | 25 |
| Be a computer programmer | 24 |
| Area ___ | 8 |
| Zip, for one | 12 |
| Zip or Morse | 12 |
| Zip or area follower | 20 |
| Zip -- | 6 |
| Zip ___ | 7 |
| You might crack one with your brain | 35 |
| Write software | 14 |
| Write lines professionally | 26 |
| Word with bar or color | 22 |
| Word with "bar" or "dress" | 46 |
| Word with "bar" or "area" | 45 |
| Word preceding various colors | 29 |
| Word after bar or area | 22 |
| When it gets cracked, it's broken | 37 |
| What a spy may write in | 23 |
| Web developer's output | 26 |
| Web composition | 15 |
| The "C" in UPC | 24 |
| System of secret symbols | 24 |
| System of rules | 15 |
| Start for "of honor" or "of silence" | 56 |
| Standard of conduct | 19 |
| Spy's writing, perhaps | 26 |
| Spy's secret | 16 |
| Spy-school subject | 18 |
| Spy writing | 11 |
| Spy ring contents? | 18 |
| Software developer output | 25 |
| Software basis | 14 |
| Semaphore signals, e.g. | 23 |
| Secret to crack | 15 |
| Secret script | 13 |
| Secrecy medium | 14 |
| Safety standards | 16 |
| Safety specifications | 21 |
| Rule book | 9 |
| Programmer's work product | 29 |
| Programmer's work | 21 |
| Program listing? | 16 |
| Problem for a cracker? | 22 |
| Preparation that needs a cracker? | 33 |
| Pig Latin, e.g. | 15 |
| Penal or zip follower | 21 |
| Penal ___ | 9 |
| Pearl Jam "No ___" | 28 |
| Output from some engineers | 26 |
| One might be cracked | 20 |
| One if by land, two if by sea, etc. | 35 |
| Morse made one | 14 |
| Morse ___ | 9 |
| Morse __ | 8 |
| Java ingredient? | 16 |
| It only makes sense when it's broken | 40 |
| It needs to be broken | 21 |
| It may be genetic | 17 |
| It may be cracked by a spy | 26 |
| IT instructions | 15 |
| It can't be understood until it's broken | 48 |
| Internet expert Lawrence Lessig's subject | 45 |
| Fourth Pearl Jam album, "No ___" | 42 |
| Feature of Doyle's "The Adventure of the Dancing Men" | 67 |
| Encrypted Wiz Khalifa track, with "The"? | 50 |
| Encipher | 8 |
| Dress ___ | 9 |
| Do programming work | 19 |