Spamhaus, a Swiss-based company operates on the blacklist servers that deliver shipments mass mails. Spamhaus is said to be able to block 80% of spam mails. However, as of March 18, and for some, this company and that many networks have had their operations disrupted by DDoS large scale (Distributed Denial of Service) attacks. It started just after the Swiss company incorporated in its CyberBunker blacklist, a Dutch site, suspected to relay spam.
The New York Times interviewed a representative CyberBunker relayed these attacks were made in retaliation against Spamhaus which is regarded as abusing its influence. During these attacks, the Internet exchanges in London, Amsterdam, Frankfurt and Hong Kong, where the interconnection networks in large cities, have also been targeted. The attack itself is nothing new, but what is worrying is its easy implementation: in fact, hackers have taken advantage of the vulnerability of DNS servers to multiply the force of the attack to reach 300 for gygabites data per second, which is more than sufficient to block servers.
Specifically, hackers pose as their victim (inthis case Spamhaus) and ship a large conversion requests to open DNS. These directories then convert the URL entered in the browser's IP address to join the computers on which the sites are hosted. Answer files are then sent to the victim, who is overwhelmed by the connections. The effect is very strong, as the responses of size is much larger than the applications
Internet has almost been cut for several hours, with a lot of delays on all types of Internet connections :. PC or mobile access. Five countries are already investigating the attack, the BBC
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