What on earth is an IP stresser?

DDoS-for- ip stresser was one of many so-called
“booter” or “stresser” services — virtual hired muscle that anyone can rent to knock nearly any website or Internet user offline.
Using stresser/booter services is illegal. Nevertheless, Europol said
Webstresser.org boasted 136,000 registered users and had been used to
launch more than 4 million attacks against websites – ranging from banks
and government agencies to police forces and gaming sites.

But the site’s dominance as the world’s biggest stresser/booter service
came to an end in April 2018, when six of the site’s suspected
top administrators were arrested in the United Kingdom, Croatia, Canada
and Serbia. Authorities in the Netherlands, Germany and the United
States also seized Webstresser’s servers, resulting in a full takedown
of the service.

DDoS Stress Testing is a service designed to assess an organization’s preparedness for various DDoS attack scenarios and flood magnitudes. The controlled tests are carried out against your IT infrastructure, at a prescheduled time and with real-time online support.
A distributed denial of service (DDoS) attack is when an attacker, or
attackers, attempt to make it impossible for a service to be delivered.
This can be achieved by thwarting access to virtually anything:
servers, devices, services, networks, applications, and even specific
transactions within applications. In a DoS attack, it’s one system that
is sending the malicious data or requests; a DDoS attack comes from
multiple systems.

Generally, these attacks work by drowning a system with requests for data. This could be sending a web server so
many requests to serve a page that it crashes under the demand, or it
could be a database being hit with a high volume of queries. The result
is available internet bandwidth, CPU and RAM capacity becomes
overwhelmed.