Posts Tagged ‘DNS’

passivedns network sniffer to log DNS query

Domain name servers may contain several type of security vulnerabilities that allow a malicious user to redirect website visitors to a third party website. The attack can be cache poisoning or ARP spoof and this in case that the DNS server is not patched or hardened. Passivedns is an open source tool that you can [...]

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Improving Web Surfing with Acrylic DNS Proxy

Any web page nowadays contains images, frames and ads belonging to different domains which force our browsers to do a series of DNS queries before being able to render the page completely. Since every single query involves packets traveling on the network the whole process can take a considerable amount of time. When you browse [...]

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Secunia Was Owned or DNS/domain hijacked?

Today Morning Secunia website was out of service and the reason of this service disruption is a DNS-attack. Many users thought that the website was compromised by hackers but that was not the case, the attack was made on the DNS server by redirecting users attempting to enter Secunia website to Hackers Website IP address. [...]

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Twitter Was Owned.. No it was a Compromised DNS trick!

Today Morning Twitter website was out of service for two hours and the reason of this service disruption is a DNS-attack. Many users thought that the website was compromised by hackers from “Iranian cyber army” by exploiting WordPress vulnerabilities but that was not the case, the attack was made on the DNS server by redirecting [...]

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DNS Poisoning

security researcher Dan Kaminsky who works at security services firm IOActive, said this week at BlackHat that the time may have come for IT vendors and users to consider broad adoption of the more-permanent security protections offered by DNS Security Extensions, or DNSSEC, technology. The cache-poisoning flaw was publicly disclosed last July and after several [...]

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New style of DNS amplification can yield powerful DDoS attacks

A new class of distributed denial-of-service (DDoS) attacks, which can overwhelm even mainstream targets, is imminent, a security researcher warned this week. DNS amplification was first widely publicized about three years ago when computer security experts Gadi Evron and Randal Vaughn published a research paper that examined a scenario in which criminals abuse recursive DNS [...]

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