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Biggest cyber-attack in history slows down global internet after row between Spamhaus and Cyberbunker

Global internet has been slowed down in what security experts are describing as the biggest cyber-attack of its kind in history.

A row between spam-fighting group Spamhaus and hosting firm Cyberbunker has sparked retaliation attacks affecting the wider internet.

It is having an impact on popular services like Netflix – and experts worry it could escalate to affect banking and email systems.

Five national cyber-police-forces are investigating the attacks.

Spamhaus, a group based in both London and Geneva, is a non-profit organization which aims to help email providers filter out spam and other unwanted content.

To do this, Spamhaus maintains a number of blocklists – a database of servers known to be being used for malicious purposes.

A row between spam-fighting group Spamhaus and hosting firm Cyberbunker has sparked retaliation attacks affecting the wider internet

A row between spam-fighting group Spamhaus and hosting firm Cyberbunker has sparked retaliation attacks affecting the wider internet

Recently, Spamhaus blocked servers maintained by Cyberbunker, a Dutch web host.

Sven Olaf Kamphuis, who claims to be a spokesman for Cyberbunker, said, in a message, that Spamhaus was abusing its position, and should not be allowed to decide “what goes and does not go on the internet”.

Spamhaus has alleged that Cyberbunker, in cooperation with “criminal gangs” from Eastern Europe and Russia, is behind the attack.

Steve Linford, chief executive for Spamhaus, said the scale of the attack was unprecedented.

“We’ve been under this cyber-attack for well over a week.

“But we’re up – they haven’t been able to knock us down. Our engineers are doing an immense job in keeping it up – this sort of attack would take down pretty much anything else.”

Steve Linford said the attack was being investigated by five different national cyber-police-forces around the world.

He claimed he was unable to disclose more details because the forces were concerned that they too may suffer attacks on their own infrastructure.

The attackers have used a tactic known as Distributed Denial of Service (DDoS), which floods the intended target with large amounts of traffic in an attempt to render it unreachable.

In this case, Spamhaus’s Domain Name System (DNS) servers were targeted – the infrastructure that joins domain names, such as bbc.co.uk, the website’s numerical internet protocol address.

Steve Linford said the attack’s power would be strong enough to take down government internet infrastructure.

“If you aimed this at Downing Street they would be down instantly,” he said.

“They would be completely off the internet.”

Steve Linford added: “These attacks are peaking at 300 gb/s (gigabits per second).

“Normally when there are attacks against major banks, we’re talking about 50 gb/s.”

Spamhaus is able to cope, the group says, as it has highly distributed infrastructure in a number of countries.

The group is supported by many of the world’s largest internet companies who rely on it to filter unwanted material.

Steve Linford said several companies, such as Google, had made their resources available to help “absorb all of this traffic”.

The attacks typically happened in intermittent bursts of high activity.

“They are targeting every part of the internet infrastructure that they feel can be brought down,” he said.

“We can’t be brought down.

“Spamhaus has more than 80 servers around the world. We’ve built the biggest DNS server around.”

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