The Information Dominance Corps is now the Information Warfare Community. See http://www.iwcsync.org/
for more information. Note in all the descriptions below, all communities in the IWC will do much more than just computer networks and cybersecurity. Also, I know just about nothing about how the other services run their equivalent communities.
USNA now graduates about 7-12 CWs and 2 IPs per class that are physically qualified for unrestricted line. As much as they like to say major does not matter, you will not be very competitive if you have a major outside of CS/IT/Cyber/CE/EE. With only nine quotas, there were Trident Scholars from the CS department left out in my class.
Intel (and in a lot of ways METOC) is its own animal separate from the computer stuff IPs and CWs do (a few USNI articles have been written about removing Intel from the IW community). Intel mostly involves collection of raw data, analysis of data into information, and synthesizing and fusing information from multiple sources into relevant and timely intelligence. Intelligence Officers lead enlisted Intelligence Specialists (IS) specializing in operational intelligence, imagery intelligence, counterintelligence, human intelligence, expeditionary intelligence, and strike planning and analysis to produce coherent intelligence products (i.e. PowerPoints...heh) to operational commanders. Newly graduated Intel officers can expect to be squadron Aviation Intel Officers (AIs), Air Wing Assistant Targeteers, work in staff N2 shops, or work at various shore commands.
IP officers can expect to spend the initial two tours first at a major telecommunications shore stations covering an AOR or broad mission set, and second as an afloat Communications division officer aboard a CG/DDG/LSD--or vice versa, depending on how detailing works out. After that, graduate school is common, then ashore or afloat Communications, Network Operations, and Combat Systems staff jobs. At this point there is some overlap between IP and CW, particularly ashore.
CW officers can expect to be detailed first to a Naval Information Operations Command (NIOC) co-located with a major NSA/CSS facility (Maryland, Georgia, Texas, Hawaii, Colorado). After this tour, they can expect to either continue with "National Mission" billets (staying with major shore facilities/NSA) or move to "Direct Support" billets, where they can be assigned as small detachments to conduct operations on aircraft, ships, and submarines.
METOC can should expect to be detailed to Naval Oceanography shore facilities specializing in Antisubmarine Warfare, Mine Warfare, Special Warfare, or one of the Fleet Weather Centers providing forecasting support to fleet units. JOs can expect to run watchfloors at these shore facilities and/or lead small detachments of forecasters and analysts aboard aircraft carriers, destroyers, and integrated as part of destroyer or mine countermeasures squadrons to support operational requirements.
I've posted on this before, more info below.
The Information Warfare Community (IWC) consists of Intelligence (INTEL), Meteorology and Oceanography (METOC), Information Professional (IP), Cryptologic Warfare (CW), and Space Cadre.
Cyber Warfare Engineer (CWE) is a designator awarded to specifically recruited computer scientists and software developers from industry. They're not looking for STEM students with a desire to lead or any of the usual officer stuff, they're looking for software developers and computer scientists to develop tools and design cryptographic algorithms. It is not something for an entry-level BS Computer Science student (much less a candidate with any other kind of degree). They are immediately assigned to NIOC Maryland and are included with Cryptologic Warfare in terms of BUPERS detailing and administration. CWEs cannot promote past O-3 and must redesignate to CW or IP to continue.
USNA/OCS/ROTC will not commission CWEs.
Generally, in regards to computer networks, CW officers and Cryptographic Technicians-Networks (CTNs) provide effects: computer network exploitation and attack. IP officers and Information Systems Technicians (ITs) provide security: information security and computer network defense. There is significant overlap in roles between both groups; attack and defense are two sides of the same coin.
Networks is not all that CWs and IPs do, however. CWs also specialize in signals intelligence (collection/analysis) and electronic warfare (attack, protection, support); IPs also specialize in communications, security (cyber/information/operations/communications/personnel), space (accounting for a majority of Navy Space Cadre), information management, and cyber acquisition. Both CWs and IPs have the opportunity to serve in Cyber Mission Force teams (https://www.defense.gov/News/Articl...puty-details-formation-of-cyber-mission-force