The CIA is tracking a criminal organization and have reason to believe they are about to launch some sort of attack on New York City. One morning, they intercept this message, can you break the cipher and figure out what it means?
8 HIJP
11 IATC
2 BEIO
7 NTYH
4 AAWC
15 LLAT
12 NOML
6 TONF
Hint
Binary might help.
Solution
HIT CITY HALL AT NOON
Convert the number to 4 digits of binary (e.g., 9 would be 0101) to correspond with the 4 letters in each row. Then take only the letters that correspond with the 1’s, bolded below:
8 HIJP
11 IATC
2 BEIO
7 NTYH
4 AAWC
15 LLAT
12 NOML
6 TONF