THREAT-WATCHENERGY & UTILITIES
Cybersecurity for Energy
Grid, gas and renewable operations run on OT built for reliability, not attack, and NIS2 treats the whole energy chain as high-criticality.
Why this sector is different
Energy is where a cyber incident stops being a data problem and becomes a physical one. State-aligned groups have already caused real blackouts, in Ukraine in 2015 and 2016, and energy infrastructure across Europe is a standing target for espionage and disruption. The sector is also changing fast. Greece's growth in solar and wind has added a large number of new producers, many of them small, whose inverters and park controllers are managed remotely by equipment makers and maintenance contractors. Every one of those remote connections is part of the grid's attack surface.
Profiles of the state-aligned groups that target energy →Where NIS2 actually lands in energy
Energy is the first sector in NIS2 Annex I, and it is broad. It covers electricity (producers, transmission and distribution system operators, suppliers, aggregators, storage operators and charging-point operators), district heating and cooling, oil (pipelines, production, refining and central stockholding), gas (transmission, distribution, storage, LNG and supply) and hydrogen. Large entities are essential and medium ones important, on the usual thresholds (50+ staff, or over €10M turnover). In Greece that means registration and supervision under Law 5160/2024, the Article 21 measures and the 24-hour early warning. Many operators carry two more layers: the EU network code on cybersecurity for cross-border electricity flows (Regulation (EU) 2024/1366), and the Critical Entities Resilience Directive for operators designated as critical.
What coverage looks like at an energy site
Control rooms, substations and generation sites run SCADA and protection systems where availability is everything, so agents and active scanning are usually off the table. OT is monitored passively from network traffic, which identifies the devices and protocols in use without touching them. The corporate side takes full endpoint, email and 24/7 coverage. Most of the risk sits between the two and around them: the IT/OT boundary, and the remote-access paths that equipment makers, maintenance contractors and aggregators use to reach sites. Locking those down, logging every session and alerting on anything unusual that crosses them is usually the highest-value work. Control systems are scoped site by site, because no two plants share a configuration.
State-aligned disruption
Groups linked to national intelligence services target energy for pre-positioning and sabotage, staying quiet inside networks for months before acting.
Third-party remote access
Vendors and contractors with standing access to inverters, SCADA and protection relays are a common way in, and often the least monitored.
Ransomware on business systems
Even when OT is untouched, ransomware on billing, trading or dispatch systems can force an operator to halt operations, as the 2021 Colonial Pipeline attack showed.
Control systems that cannot be patched
Protection and control equipment is built to run for decades. Where patching isn't possible, segmentation, strict access control and monitoring carry the load.
Relevant Services
Talk to us about OT and energy security
Tell us about your sites, control systems and remote-access setup, and we'll map where your exposure actually sits.