Threat profile
Denial of service (DoS and DDoS)
Overwhelming a service or its network link so legitimate users cannot reach it.
How it works
A distributed attack uses many devices, often compromised ones, to send more traffic or more expensive requests than the target can handle. Volumetric attacks fill the bandwidth; protocol attacks exhaust connection tables; application-layer attacks request costly pages repeatedly.
What to look for
- Sudden growth in traffic from many unrelated addresses.
- Timeouts for all users at once, with normal resource use on the application itself.
- Many requests for one expensive page or endpoint.
What reduces the risk
- Put the service behind a content delivery network or a DDoS-protection provider.
- Cache static content and rate-limit expensive endpoints.
- Plan capacity and a contact with your provider before an incident, not during it.
- Do not leave your own devices exposed with default passwords; they are what attackers recruit.
Sources
Related threats
This section is for defence and learning. Do not test systems you do not own or have written permission to test: unlawful access to an information system is an offence (Turkish Penal Code, Article 243).