What is Grayware?
Grayware is a type of malware that is not as harmful as viruses or spyware, but can still be annoying and cause problems for computer users. Grayware includes programs that display unwanted ads (adware), track user information (spyware), or slow down the computer (slowware). While grayware is not as destructive as other types of malware, it can still be a nuisance and cause problems for users. For example, adware can track your online activity and slow down your computer, while spyware can collect your personal information and sell it to third parties. Grayware can also be used to deliver other types of malware to your computer, such as viruses or spyware. For this reason, it is important to be aware of grayware and take steps to protect your computer from it. There are many ways to protect your computer from grayware, including installing an anti-malware program, using a firewall, and keeping your software up-to-date. Site link
What is a Rootkit?
A rootkit is a type of malicious software that is designed to gain control over a computer system without the user’s knowledge. Once a rootkit gains control, it can be used to undetectably alter the system in a variety of ways, including planting malware, stealing sensitive data, or remotely controlling the system. Rootkits are difficult to detect and remove because they often use deception and tamper with low-level system components.
Rootkits have been around for nearly as long as personal computers have been in use. One of the first rootkits, called the PC-FIX order form, was used in the 1980s to steal credit card numbers from point-of-sale terminals. In the 1990s, rootkits became more common as a way for criminals to hide their activities on compromised systems. For example, the first rootkit for Microsoft Windows, called NTRootkit, was used to conceal the activities of the notorious spyware program Back Orifice.
More recently, rootkits have been used in a variety of attacks, including the Sony Pictures Entertainment hack in 2014 and the exploitation of the Equifax security breach in 2017. Rootkits are also a growing concern in the realm of industrial control systems, as they can be used to gain undetected access to critical infrastructure.
While rootkits can be used for a variety of nefarious purposes, they are not always deployed with malicious intent. In some cases, rootkits are used for legitimate purposes, such as to gain access to a locked system for troubleshooting or to bypass security restrictions. For example, law enforcement and intelligence agencies have been known to use rootkits as part of their investigative activities.
Rootkits can be classified into two broad categories: user-mode rootkits and kernel-mode rootkits. User-mode rootkits operate at the application level and are designed to gain control of specific programs or services. Kernel-mode rootkits, on the other hand, work at the system level and are designed to subvert the core components of an operating system.
User-mode rootkits are typically less dangerous than kernel-mode rootkits because they can be easily detected and removed by security software. Kernel-mode rootkits, on the other hand, are much more difficult to detect and remove because they can tamper with low-level system components, such as the kernel itself.
One of the most well-known rootkits is Stuxnet, a malware program that was designed to attack industrial control systems. Stuxnet was first discovered in 2010 and is believed to have been used in a targeted attack against the nuclear facility in Iran. The Stuxnet rootkit was able to infect a system and remain undetected for a significant amount of time by hiding its activities within the kernel.
While rootkits can be used for a variety of purposes, they are typically deployed with the intention of stealing sensitive data or remotely controlling a system. Rootkits are difficult to detect and remove, and they can pose a serious security threat to individuals and organizations.
Visit malwarezero.org to learn more about types of spyware. Disclaimer: We used this website as a reference for this blog post.