Read e-book online Network and data security for non-engineers PDF

By Frank M. Groom, Kevin Groom, Stephan S. Jones

Examine community and knowledge safeguard by way of interpreting the Anthem breach and step by step how hackers achieve access, position hidden software program, obtain details, and conceal the facts in their access. comprehend the instruments, setting up continual presence, use of websites as testbeds to figure out winning diversifications of software program that elude detection, and attaining out throughout relied on connections to the full healthcare procedure of the Read more...

summary: study community and knowledge safeguard via interpreting the Anthem breach and step by step how hackers achieve access, position hidden software program, obtain details, and conceal the facts in their access. comprehend the instruments, setting up continual presence, use of websites as testbeds to figure out winning diversifications of software program that elude detection, and achieving out throughout relied on connections to the total healthcare procedure of the kingdom. learn the parts of expertise being diverted, beginning with program code and the way to guard it with isolation methods. Dissect types of infections together with viruses, worms, bots, and Trojans; and encryption with RSA set of rules because the for instance

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10. Keyboard hardware: Hardware keyloggers are used for keystroke logging by means of a hardware circuit that is attached somewhere in between the computer keyboard and the computer, typically in-line with the keyboard’s cable connector. There are also USB connector–based hardware keyloggers. More stealthy implementations can be installed or built into standard keyboards, so no device is visible on the external cable. Both types log all keyboard activity to their internal memory, which can subsequently be accessed, for example, by typing in a secret key sequence.

Only files transmitted outside the Anthem network are encrypted for transmission, the assumption being that that is where they are most vulnerable. However, the hackers are now insiders with knowledge about these encryptions and their associated keys, so even the transmitted files are now vulnerable. Testbed On subsequent entries, usually monthly, the hackers place a series of software components that will persistently and undetectably hide in the Anthem systems. The hackers then periodically examine the hidden software to see if it has been detected and removed.

The web shell consists of a tiny text file (often as little as 24 bytes in size) that contains little more than an “eval( )” statement, which allows the attacker to execute processes on the web server. That script can be easily obfuscated to evade signature and IOC scanning technologies. 6. The intrusion begins with the compromise of an external-facing web server, often a Windows IIS server. China Chopper Web Shell Controller On the attackers’ site, a controller application is executed that allows them to upload or download files and provides access to a virtual terminal from which they can execute commands.

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