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April 25, 2018

Police Shut Down World’s Biggest ‘DDoS-for-Hire’ Service–Admins Arrested

In a major hit against international cybercriminals, the Dutch police have taken down the world’s biggest DDoS-for-hire service that helped cyber criminals launch over 4 million attacks and arrested its administrators.

An operation led by the UK’s National Crime Agency (NCA) and the Dutch Police, dubbed “Power Off,” with the support of Europol and a dozen other law enforcement agencies, resulted in the arrest of 6 members of the group behind the “webstresser.org” website in Scotland, Croatia, Canada and Serbia on Tuesday.With over 136,000 registered users, Webstresser website lets its customers rent the service for about £10 to launch [...]

 
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March 8, 2018

‘Kill Switch’ to Mitigate Memcached DDoS Attacks — Flush ‘Em All

Security researchers have discovered a “kill switch” that could help companies protect their websites under massive DDoS attack launched using vulnerable Memcached servers.

Massive Memcached reflection DDoS attacks with an unprecedented amplification factor of 50,000 recently resulted in some of the largest DDoS attacks in history.

To make matter even worse, someone released proof-of-concept (PoC) exploit code for Memcached amplification attack yesterday, making it easier for even script kiddies to launch massive cyber attacks.Despite multiple warnings, more than 12,000 vulnerable Memcached servers with UDP support enabled are still accessible on the [...]

 
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February 28, 2018

Memcached Servers Abused for Massive Amplification DDoS Attacks

Cybercriminals have figured out a way to abuse widely-used Memcached servers to launch over 51,000 times powerful DDoS attacks than their original strength, which could result in knocking down of major websites and Internet infrastructure.

In recent days, security researchers at Cloudflare, Arbor Networks, and Chinese security firm Qihoo 360 noticed that hackers are now abusing “Memcached” to amplify their DDoS attacks by an unprecedented factor of 51,200.

Memcached is a popular open-source and easily deployable distributed caching system that allows objects to be stored in memory and has been designed to work with a large number of open connections. [...]

 
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January 26, 2018

Even A Single Computer Can Take Down Big Servers Using BlackNurse Attack

Yes, you only need a single laptop with a decent internet connection, rather a massive botnet, to launch overwhelming denial of service (DoS) attacks in order to bring down major Internet servers and modern-day firewalls.

Researchers at TDC Security Operations Center have discovered a new attack technique that lone attackers with limited resources (in this case, a laptop and at least 15Mbps of bandwidth) can use to knock large servers offline.

Dubbed a BlackNurse attack or the low-rate “Ping of Death” attack, the technique can be used to launch several low-volume DoS attacks by sending specially formed Internet Control Message Protocol (ICMP) packets, or [...]

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