Tech with Leens

What is spam in cybersecurity? Spam, in the context of cybersecurity, refers to any unsolicited and often irrelevant or inappropriate messages sent over the internet, typically to a large number of users, primarily for advertising, phishing, spreading malware, or other similar purposes. Types of Spam Email Spam, Instant Messaging Spam (SpIM), Social Media Spam, Search Engine Spam, Blog Comment Spam, SMS (Text Message) Spam, Call Spam, Trackback/Pingback SpamImage Spam

  How DHCP works? Dynamic Host Configuration Protocol (DHCP) operates at the application layer of the TCP/IP stack, dynamically assigning IP addresses and other network configuration details to clients. It works as a client-server protocol where servers manage a pool of unique IP addresses and assign them to clients upon request. When a DHCP-enabled client connects to a network, it broadcasts a request for configuration information, and the server responds with an IP address and other details, valid for a specified lease period. DHCP servers maintain records of all allocated IP addresses, using clients' MAC addresses to prevent duplicate IP assignments. Configuration involves creating a file that stores network information for clients. DHCP is limited to local area networks (LANs) and lacks built-in security mechanisms, making it vulnerable to spoofing and attacks. For larger networks or those with multiple subnets, DHCP relay services on routers are necessary to relay requests bet...

 introduction Every time you connect your computer or smartphone to the internet, the (DHCP) operates in the background. While you're unlikely to need to configure DHCP settings unless you're a network administrator, understanding what DHCP is and how it functions is beneficial.  IP addresses brief  Before diving into DHCP, let's understand public and private IP addresses. IP addresses are like home addresses for the internet, guiding data to and from websites. When setting up the internet at home, your ISP assigns a public IP to your router for internet communication. However, with multiple devices at home needing to communicate, each has its own private IP address alongside the router's public one. DHCP, or dynamic host configuration protocol, automatically assigns these private addresses to devices, ensuring smooth internet connectivity without manual setup. So, what's the connection to DHCP? well, Your public IP must be unique, but your devices' private IPs ...

 The definition A vulnerability is any flaw or weakness within the technology system that cybercriminals can exploit to gain unauthorized access to a network, information assets, and software applications. The Importance of Identifying Vulnerabilities A vulnerability is a future threat to an organization’s security. If an attacker identifies and exploits the vulnerability, then the costs to the organization and its customers can be significant What is the difference between vulnerability and risk? *A vulnerability is a weakness that can be exploited to gain unauthorized access to or perform unauthorized actions on a computer system. *Risk is defined as the probability of a loss event occurring in a given unit of time (likelihood) multiplied by the expected magnitude of loss resulting from that loss event (impact). Cyber risk is the expected loss resulting from a cyberattack or data breach. Vulnerability is a component of the likelihood component of the risk equation. The vuln...

  1. What is the CIA Triad?  The CIA triad refers to the three fundamental principles of cybersecurity: confidentiality, integrity, and availability. To avoid confusion with the Central Intelligence Agency, it is sometimes called the AIC triad, standing for availability, integrity, and confidentiality. This model is widely used as the foundation for developing security systems, identifying vulnerabilities, and devising solutions. When an organization successfully implements all three aspects of the triad, its security profile becomes stronger and more capable of handling threats. In this context, confidentiality involves implementing high-level rules to restrict access to data and information. Integrity ensures that the information is trustworthy and accurate. Availability focuses on risk management to ensure reliable access to information by authorized individuals. 2. What are the 3 components of the CIA triad? 1. Confidentiality : it ensures that data is kept secret or priva...

  A simple deffintion of it that it means protecting devices like computers, software, and data from online threats. People and businesses use it to prevent unauthorized access to their computer systems and data centers. Cybersecurity is vital in our interconnected world, with expanding users and data in enterprises facing increasing cyber threats. Businesses and individuals are at risk from increasing cyber threats due to more users and data online. Without good strategies and trained staff, organizations can face major disruptions. Individuals also face risks like identity theft and losing important data. Securing critical systems is essential for keeping society running smoothly. Cyber threat researchers help by finding weaknesses and making the internet safer for everyone.