The 20-year term isn't as tough as it could have been (Ferizi was facing a maximum of 35 years), but American officials still see it as a warning. The case "sends a message" to those who'd materially support terrorist groups, Carlin says -- the US will come after you, and you'll get much more than a slap on the wrist. This isn't going to deter the most committed ISIS hackers (at least not those operating from ISIS-occupied territories), but it may give pause to others who are still considering cyberattacks.