distributed denial of service (DDOS)

We explain what this networking error means for users and website owners

DDoS attacks are on the up - here's how to fight back

It may not always be obvious what's causing the issue, but there are steps you can take to get back online

An FOI request has revealed that the broadcaster is blocking almost seven million malicious emails a month

The previously unknown attack, which was triggered by state-backed hackers, is the largest DDoS attack on record

The continued onslaught has knocked the flight tracker offline as its engineers work to restore services

Criminals are building armies of digital zombies that can be trained on your business – how worried should you be?

Hardware and software that isn't authorised by IT departments can leave businesses vulnerable

The rare form of attack was designed to overwhelm the victim’s networking gear

Cloud giant reveals three days of malicious traffic hit a peak of 2.3 Tbits/sec

DDoS attacks against US government websites and public services have also seen a sharp increase

Security system for the country's welfare service trigged by 95,000 people attempting to log in at once

Day-long outage caused by Route 53 DNS system disruption

The latest black market report shows the low price of devastating cyber tools

The popular online knowledge sharing website experienced large outages at the weekened, prompting a response from Britain's cyber body

After its seizure of illicit sites in December, attack rates have also taken a sharp downturn

Security researchers have found a new variant of the malicious botnet that grounded some of the world's biggest tech companies

Operating out of Cyprus, this hacker-for-hire knocked the entire country's internet offline - thought to be world first

The internet security company that you may not have heard of, but have probably used

A quarter of DDoS attacks are launched using public cloud services, with Microsoft Azure the most commonly used

Record-breaking attack comes only five days after GitHub was taken offline

The site had just ten minutes of downtime

Researchers suggest the variant could 'change the landscape of Linux IoT infection'