What is Computer Protection?

Zeus Virus

Computer protection or security is the process of protecting your computer against unauthorized intrusions. This unauthorized intrusion could be anything from the installation of malicious software on your computer without your consent, to hackers taking over your computer’s control so that it can be used as a botnet, including every other security threat which falls between them.

Computer Protection Basics

Once your PC security has been compromised, hackers can also take over your identity and use it to their advantage. Like, for example, hackers can pose as ‘you’ to carry out security attacks, can hide their actual location in case of high profile attacks and use yours instead, and can also encrypt your computer’s data or crash it altogether.

Therefore, in this blog post, let’s take a look at some of the basics of computer protection, using which you can secure your computer successfully.

  1. Install Antivirus Software: Not just any antivirus software but one which can offer real-time protection. Because real-time protection is crucial if your PC is to be protected against today’s security threats. Each day a new security threat is discovered and your antivirus software should keep up with them. As to whether you should go for free or paid antivirus, this entirely depends on your security requirements.
  2. Implement Other Security Tools: Unfortunately, antivirus alone is not sufficient to keep security threats at bay. You need the whole package – anti-malware, firewall, and others – to combat today’s sophisticated malware. These bunch of security tools usually are packaged and sold under the name Internet Security suite. PC users like you have to implement these if they need enhanced computer protection.
  3. Keep Your Computer Updated: Ensure every software within your computer is properly patched up and up-to-date. This includes the operating system and the other third-party software which might be a part of it. Because most of the security threats exploit your system’s security vulnerabilities and keeping your system up-to-date can eliminate such threats.
  4. Use Complex Passwords: Another aspect which is very important but quite often ignored are strong and unguessable passwords. Each password you possess (not just your system password) to various accounts you might be having pose a serious threat to your PC and your digital identity. Therefore ensure you always implement complex passwords. And by complex passwords, we mean passwords which contain the right mix of alphabets, symbols, numbers and special characters.
  5. Follow Security Best Practices: Finally, don’t forget to follow the security best practices like not clicking on suspicious mails, not downloading suspicious attachments, not visiting dangerous websites etc., to keep your computer and digital identity safe. In other words, exercise caution while online.


Your computer protection is something which cannot be taken lightly. Especially considering the rapidly changing cybersecurity threat landscape which seems to throw up new challenges almost every day. Therefore equip your computer with the necessary security tools – like Comodo Antivirus and Comodo Internet Security (CIS) – and ensure it stays protected from various malware attacks and other security threats.

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Significance of Network Access Control and Endpoint Network Security

What is Network Access Control

What is Network Access Control?

Network access control (NAC) refers to a method that helps in boosting the safety of a patented network by limiting the availability of network resources to endpoint protection devices that follow a defined security policy.

A conventional network access server (NAS) is one that can carry out functions like authentication and authorization for potential users by confirming logon information. NAC additionally restricts the info which will be accessed by individual users and implements anti-threat applications like antivirus computer code, firewalls, and spyware detection programs. NAC regulates and prohibits the items individual subscribers can do once they get connected. NAC products are introduced by a variety of leading networking and IT vendors.

NAC is perfect for agencies and corporations where it is possible to rigidly control the user environment. A few administrators have indeed stated their doubt about the usefulness of NAC deployment in networks with huge numbers of diverse devices and users, the nature of which change on a constant basis. An example here refers to a network for a large university with numerous access points, multiple departments, and thousands of users with different objectives and backgrounds.

Why is it Important to have a NAC solution?

It is becoming a growing necessity to possess the tools providing the access control, visibility, and compliance capabilities essential for strengthening network security infrastructure. This is true because organizations are now expected to account for the exponential growth of mobile devices accessing their networks and the security risks they bring.

A NAC system is important at it will deny network access to noncompliant devices, give them only restricted access to computing resources, or place them in a quarantined area, thus keeping insecure nodes from infecting the network.

What are the General Capabilities of a NAC solution?

NAC solutions have the potential to help organizations control access to their networks via the following capabilities:

  • Guest networking access: Takes care of guests via a customizable, self-service portal that comprises of guest authentication, guest sponsoring, guest registration, and a guest management portal.
  • Security posture check: Assesses security-policy compliance by device type, user type, and operating system.
  • Incidence response: This involves mitigating network-based threats by employing security policies capable of blocking, isolating, and repairing noncompliant machines without administrator attention.
  • Bidirectional integration: With NAC, it is possible to incorporate with other security and network solutions via the open/RESTful API.
  • Policy life-cycle management: Enforces policies for all operating scenarios without the need for separate products or additional modules.
  • Profiling and visibility: Recognizes and profiles users and their devices before any damage can be caused by malicious code.

What is Endpoint Network Security?

Endpoint network security protects a corporate network via focusing on network devices (endpoints) by monitoring their activities, software, status, authentication, and authorization.

Why is Endpoint Security Important?

Endpoint security is considered to be an increasingly vital element for corporate networks as an increasing number of employees and authorized outsiders (including, consultants, customers, business partners, and clients) are granted network access via the Internet and/or a wide range of mobile devices.

Technological advances are boosting the development of endpoint protection. Security elements presently comprise of intrusion protection and prevention, and also behavior blocking software that will help monitor endpoint protection device activities for unofficial applications or malicious intent.

There are a few complex endpoint protection programs that focus on user device authentication. As a user tries to login, credentials are validated, following which the device is scanned for compliance with corporate policies, which may include a scan for unlicensed software, antivirus software, a firewall, updated virtual private network (VPN), mandatory corporate software and an approved operating system (OS). Devices that do not meet such corporate policies may be given limited access or quarantined. This is called network access control (NAC), which is used for unifying many elements of endpoint network security. Access is mostly provided according to the user’s profile. For instance, a human resources (HR) employee may be granted only general access to a network and HR department files.

Network Access Control

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What is Zeus Virus?

Zeus Virus
Zeus Virus

First detected in 2007, Zeus is a malware tool kit that runs on Windows version also known as Zbot, and enables the hackers to generate a new trojan horse.

Trojan horse looks genuine on the internet, but in reality it’s a dangerous malware. This enables non-programmers to buy Zeus in the black market and perform cybercrimes against their target victim. Per the 2010 reports, a Zeus package starts at about $3,000 and if there is a requirement of any extra modules, it goes up to $10000.

Zeus Trojan is used to gain access to banking credentials through keystroke logging, man-in-the-middle attacks, it is also deployed to install the CryptoLocker ransomware.

What Zeus Virus Does to Computers?

Zeus has two key capabilities:

It creates a botnet by a secretly formed network of corrupted machines controlled and monitored by a command and control server and a malicious author. The malware author typically steals an enormous amount of information and also performs attacks on a large-scale.

Zeus behaves as a financial service Trojan developed by the hackers to steal banking details from infected devices. The malware author performs the attacks through keylogging and website monitoring, which enables the malware to identify when the user is on a banking website so it can document the keystrokes used while logging in. The trojan then escapes the existing website security as the login keystrokes were already recorded once the user attempts to enter the banking website.

There are a range of Zeus variants that can affect mobile devices, in an attempt to gain access to two-factor authentication.

Initially, Trojans only affected computers that run on Microsoft Windows OS, however, the latest versions have evolved to attack and infect Android devices, Symbian and Blackberry devices. The Malware author unveiled the source code of Zeus to the public in 2011. This gave way to the creation of new variants of the Zeus Trojan.

How the Zeus Virus Infects Computers?

The Zeus Virus is comprised of two key techniques of infection

  • Drive-by-downloads
  • Spam Messages


Malware authors attempt to infect websites by inserting the Zeus code into a website that the users trusts to be genuine. The malware gets installed into the website when the user enters the website.

Spam Messages

Hackers or cyber criminals send spam messages through phishing emails, and malicious social media campaigns that intend to spread malicious infection through messages and social media posts. The emails look genuine and when users click on the link in the message or email, they are redirected to a malicious website. Zeus is robust and efficient, and is configured to gain access to social media and email login details enabling the malicious botnet to send spam messages from genuine sources hence the scope of infecting the victims go high.

Who is the Zeus trojan targeting?

Any Windows user can be a victim of the Zeus botnet. Zeus has infected a huge amount of PCs with different versions.

Since its inception, Zbot has been leveraged to steal confidential data from The Bank of America, US Department of Transportation, NASA, and private companies like ABC, Oracle, Amazon and Cisco.

How to prevent the Zeus trojan Using Comodo Advanced Endpoint Protection?

Endpoint Protection delivers complete protection, even against the most threatening zero-day and unknown threats. Comodo Advanced Endpoint Protection (AEP) features Default Deny Security with Default Allow Usability. This solution denies unknown suspicious files from running on a virtual container called the sandboxed environment, where the unknown files are executed without affecting the user experience. IT and security management platform assists devices of the OS (Linux, Windows, Linux, Android, OSX, and iOS devices that are inter-linked to all the physical and virtual networks.

It is essential to understand the key features of a security product – to decide if the product is all good to match your business requirements. Choosing and identifying the right and reliable product is certainly a main criteria to provide complete protection to the endpoints. To fend of the brute forces it is essential to equip the security arsenal with Comodo Endpoint protection as it integrates some of the future-proof security techniques like default deny solution, along with containment technology to deliver protection and absolutely deny malicious activities.
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