klˈeɪmən wʌz ˈɔːlsoʊ ɐ ɹˈɛɡjʊlɚ kəntɹˈɪbjuːɾɚ tə kɹɪptˈɑːɡɹəfi ænd sᵻkjˈʊɹɹᵻɾi mˈeɪlɪŋ lˈɪsts wˌɛɹ dɪskˈʌʃənz ɪŋklˈuːdᵻd tˈɛknɪkəl ˈæspɛkts ʌv kɹˈɪptəsˌɪstəmz ænd ðə pˈɑːlətˌɪks ʌv kɹɪptˈɑːɡɹəfi.
Kleiman was also a regular contributor to cryptography and security mailing lists where discussions included technical aspects of cryptosystems and the politics of cryptography.