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April 5, 2019 01:00 pm

Hacker Group Has Been Hijacking DNS Traffic On D-Link Routers For Three Months [Update]

An anonymous reader quotes a report from ZDNet: For the past three months, a cybercrime group has been hacking into home routers -- mostly D-Link models -- to change DNS server settings and hijack traffic meant for legitimate sites and redirect it to malicious clones. The attackers operate by using well-known exploits in router firmware to hack into vulnerable devices and make silent changes to the router's DNS configuration, changes that most users won't ever notice. Targeted routers include the following models (the number to the side of each model lists the number of internet-exposed routers, as seen by the BinaryEdge search engine): D-Link DSL-2640B - 14,327; D-Link DSL-2740R - 379; D-Link DSL-2780B - 0; D-Link DSL-526B - 7; ARG-W4 ADSL routers - 0; DSLink 260E routers - 7; Secutech routers - 17; and TOTOLINK routers - 2,265. Troy Mursch, founder and security researcher at internet monitoring firm Bad Packets, said he detected three distinct waves during which hackers have launched attacks to poison routers' DNS settings --late December 2018, early February 2019, and late March 2019. Attacks are still ongoing, he said today in a report about these attacks. A normal attack would look like this: 1. User's computer or smartphone receives wrong DNS server settings from the hacked router. 2. User tries to access legitimate site. 3. User's device makes a DNS request to the malicious DNS server. 4. Rogue server returns an incorrect IP address for the legitimate site. 5. User lands on a clone of the legitimate site, where he might be required to log in and share his password with the attackers. Update: 04/05 16:45 GMT by M : The story adds, "According to Stefan Tanase, security researcher at Ixia, these campaigns have hijacked traffic meant for Netflix, Google,PayPal, and some Brazilian banks, and have redirected users to clone sites, hosted over HTTP, on the networks of known bulletproof hosting providers."

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