Network intrusion
Network intrusion
(also cyber intrusion or network breach)
Network intrusion definition
A network intrusion, alternatively referred to as a network breach or cyber intrusion, is defined as unsolicited activity on a digital network. Individuals known as hackers instigate these activities, typically with the objective to illicitly access, modify, or delete data, destabilize network functions, or implant harmful software.
See also: brute-force attack, firewall
Network intrusion examples
- Data breach: Hackers might intrude into the network to steal sensitive data, such as credit card details or personal identifiers.
- Denial of service (DoS): By overwhelming a network’s resources, intruders can prevent legitimate users from accessing services.
- Man-in-the-middle (MitM) attack: An intruder intercepts communication between two parties, potentially altering or stealing the transmitted data.
Comparisons of network intrusion
Network intrusion is akin to physical intrusion into a property. Just as an intruder breaks into a house to steal or cause harm, a network intruder breaches the network’s defenses for similar malicious intent.
Preventing network intrusion
- Firewalls: The use of firewalls can prevent unauthorized access to your network.
- Intrusion detection systems (IDS): These systems monitor network traffic and send alerts when they detect potential attacks.
- VPN: A virtual private network (VPN) can provide a secure connection, encrypting your data and hiding your online activity from potential intruders.