Let us understand a bit on the DoS Attack.

DOS Attack :

• Denial-of-Service (DoS) attack is a malicious attempt to interrupt the normal functioning of a computer or network by overwhelming it with traffic (or it is attempt to overwhelm the server with unauthorized requests so the authorized requests slow down to become unusable).

• A DoS attack can be launched by a single computer or multiple computers.

• The attack can be done in many ways, such as flooding the target with traffic, exploiting vulnerabilities in the target’s software, or consuming the target’s resources.

• Some types of DoS attacks include Ping Flood, Smurf Attack, and Buffer Overflow Attack.

• The indication of being under a DoS attack is inability to load certain websites, slow network functioning, failure to access specific websites, and sudden loss of connectivity across devices on the same network.

• The DoS attacks are illegal and can cause huge harm to the targeted system.
  So if one is under the DoS attack contact your network administrator or security team immediately.