ICBM (intercontinental ballistic missile) address or missile address is hackerslang for one's longitude and latitude[1] (preferably to seconds-of-arc accuracy) when placed in a signature or another publicly available file.
^The new hacker's dictionary. Raymond, Eric S. (3rd ed.). Cambridge, Massachusetts: MIT Press. 1996. p. 253. ISBN9780262680929. OCLC42329393.{{cite book}}: CS1 maint: others (link)