{
  /*** [SECTION 0600]: BLOCK IMPLICIT OUTBOUND [not explicitly asked for - e.g. clicked on] ***/
  /* 0601: disable link prefetching
   * [1] https://developer.mozilla.org/docs/Web/HTTP/Link_prefetching_FAQ ***/
  "network.prefetch-next" = false;
  /* 0602: disable DNS prefetching
   * [1] https://developer.mozilla.org/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control ***/
  "network.dns.disablePrefetch" = true;
  #   // user_pref("network.dns.disablePrefetchFromHTTPS", true); // [DEFAULT: true]
  /* 0603: disable predictor / prefetching ***/
  "network.predictor.enabled" = false;
  #  // user_pref("network.predictor.enable-prefetch", false); // [FF48+] [DEFAULT: false]
  /* 0605: disable link-mouseover opening connection to linked server
   * [1] https://news.slashdot.org/story/15/08/14/2321202/how-to-quash-firefoxs-silent-requests ***/
  "network.http.speculative-parallel-limit" = 0;
  /* 0606: enforce no "Hyperlink Auditing" (click tracking)
   * [1] https://www.bleepingcomputer.com/news/software/major-browsers-to-prevent-disabling-of-click-tracking-privacy-risk/ ***/
  #   // user_pref("browser.send_pings", false); // [DEFAULT: false]
}