Hackers exploit weaknesses in a system to gain entry or manipulate data. Technological advances have allowed them to implement varying strategies. That is why security teams of service providers need to continuously improve their security infrastructure to protect their network. Keep reading to know how hackers can gain remote access to a system through backdoor applications.
Gaining Command and Control of the Targeted Network
Hackers use backdoors to gain command and control of the network they are targeting without being detected. They may also use legitimate websites or services for launching an attack. Some hackers even use remote access tools to hack a computer without the knowledge of a user. Typically, remote access tools contain malicious code for monitoring a computer and stealing information through key-logging and data capturing.
Using a Connect-Back Approach
Hackers use a connect-back backdoor approach to connect to a target system to their command and control server through outgoing connections. These connections are rarely blocked by firewalls. Attackers get around the firewall by sending direct emails to targets within the network to trick a user into accessing the email, giving them entry. Also, they can attack public IP addresses they can find on a server to update their command and control systems.
IT teams can protect their system from this method by looking for and blocking external out-of-place IP addresses, together with email scanning and filtering.
Using Malware Programs
Hackers can infiltrate the backdoor and evade detection while they download the second malware program within the target system. The second program will steal information. Hackers switch between multiple servers to make sure their command and control servers’ IP addresses haven’t been blacklisted. They will build a network connecting utility or ping into the backdoor to bypass the security and intruder detection system of the service provider.
Using Popular Email and Communication Channels
Hackers use Gmail, Yahoo, or instant messaging sites and mimic legitimate file headers in the message. This way, they won’t be easy to detect. Security teams cannot protect their systems from this measure manually. They need a highly reputable anti-malware program and a network handling security solution. Also, they can advise customers not to open messages from unknown sources.
Although some internet service providers work to protect their systems from network abuse, a lot of them struggle to keep up to speed with today’s hackers. And aside from backdoors, hackers have many other ways to infiltrate a network without detection.