Israel has mandatory military service and part of it's military is an elite hacking group known as Unit 8200[0]. Members of this unit who leave the military have founded a huge number of information security and antivirus companies based in Israel (mostly in Tel Aviv)[1].

----

[0] https://en.wikipedia.org/wiki/Unit_8200

[1] https://en.wikipedia.org/wiki/Unit_8200#Companies_founded_by...