05/02/2026
EV - DoS Attack
EV charging security isn't only about "big hacks" like breaking encryption or taking over firmware. Sometimes, the most disruptive issues are the unglamorous ones: reliability bugs that can be pushed into real outages.
A recent example from the EV charging ecosystem describes a software flaw that can gradually consume memory during repeated connection attempts between charging equipment and the backend service. Over time, that resource drain can slow things down, destabilize the process, and in the worst case lead to a denial-of-service style outage.
How the impact typically happens (high level)
• Chargers (or charging controllers) try to connect to a backend system.
• If connectivity is unstable, they may retry many times.
• A bug causes resources to accumulate instead of being released.
• Eventually, the system becomes less responsive or fails, affecting availability.
Why this matters beyond EV charging
• In operational environments, availability is the product. Even "moderate" technical issues can translate to real downtime, queues, and reputational damage. •It blurs the line between reliability and security: repeated failures and outages can become an attack opportunity (or amplify the impact of normal incidents)