Cyber security researchers have reported attacks from hackers that have been doing Cisco router firmware attacks in order to gain access to networks.
Cisco is a leading provider of world-class equipment in networks and it makes them attractive targets to cyber criminals. The malicious malware been nicknamed “SYNful,” and it signals a router when it starts to communicate with another router and implants the exploited. This new threat would give a hacker an excellent position in any network. According to the report, hackers are using a modified IOS image and are taking advantage of default or stolen credentials in order to gain initial access to the routers.
The cyber criminals use a modified Cisco IOS image that allows the attacker to load different functional modules. They also implant unrestricted access using a secret backdoor password. It is reported that Cisco 1841, 2811, and 3825 routers are known to be targeted.
Another serious security concern is that it exists within a modified Cisco IOS image file and continues to maintain its presence even after the router is rebooted.
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