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Cortex XSOAR enhances Security Operations Center (SOC) efficiency with the world’s most comprehensive operating platform for enterprise security. Cortex XSOAR unifies case management, automation, real-time collaboration, and native threat intel management in the industry’s first extended security orchestration, automation, and response (SOAR) offering.

 A rootkit is a type of malware that enables cyber criminals to gain access to and infiltrate data from machines without being detected. It covers software toolboxes designed to infect computers, give the attacker remote control, and remain hidden for a long period of time1 One of the most prominent characteristics of a rootkit is that it cannot be detected by antivirus because of its masking techniques. A rootkit may be able to subvert the software that is intended to find it, such as by hooking system calls, modifying kernel objects, or tampering with the registry2 Another prominent characteristic of a rootkit is that it takes control of the operating system. A rootkit may install itself in the kernel or the firmware of the device, giving it the highest level of privilege and access. A rootkit may also replace the bootloader or the BIOS of the machine, making it difficult to remove. A rootkit can use its control over the operating system to launch other malware, such as ransomware, bots, keyloggers, or trojans34 References:

1: What Is a Rootkit? How to Defend and Stop Them? | Fortinet

2: Rootkit - Wikipedia

3: What Is a Rootkit? – Microsoft 365

4: What is Rootkit? Attack Definition & Examples - CrowdStrike

The six pillars include:

1. Business (goals and outcomes)

2. People (who will perform the work)

3. Interfaces (external functions to help achieve goals)

4. Visibility (information needed to accomplish goals)

5. Technology (capabilities needed to provide visibility and enable people)

6. Processes (tactical steps required to execute on goals)

All elements must tie back to the business itself and the goals of the security operations

In cloud computing, there are three main service models: Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS). Each model defines the level of responsibility and control that the cloud provider and the cloud customer have over the cloud resources and services. The cloud provider is responsible for vulnerability and patch management of the underlying operating system in SaaS and PaaS models, while the cloud customer is responsible for it in IaaS model. In SaaS, the cloud provider delivers software applications over the internet and manages all aspects of the cloud infrastructure, platform, and application. The cloud customer only needs to access the software through a web browser or an API. In PaaS, the cloud provider offers a platform for developing, testing, and deploying applications and manages the cloud infrastructure and operating system. The cloud customer can use the platform tools and services to create and run their own applications. In IaaS, the cloud provider supplies the basic cloud infrastructure, such as servers, storage, and networking, and the cloud customer can provision and configure their own operating system, middleware, and applications. References: Cloud Computing Service Models, Cloud Security Fundamentals - Module 2: Cloud Computing Models, Palo Alto Networks Certified Cybersecurity Entry-level Technician (PCCET)

Data security is the only type of security that the customer is fully responsible for when using a SaaS application. Data security refers to the protection of data from unauthorized access, use, modification, deletion, or disclosure. Data security includes aspects such as encryption, backup, recovery, access control, and compliance12. The customer is responsible for ensuring that their data is secure in transit and at rest, and that they comply with any applicable regulations or policies regarding their data.

The other types of security - physical, platform, and infrastructure - are the responsibility of the SaaS provider. Physical security refers to the protection of the hardware and facilities that host the SaaS application. Platform security refers to the protection of the software and services that run the SaaS application. Infrastructure security refers to the protection of the network and systems that support the SaaS application. The SaaS provider is responsible for ensuring that these layers of security are maintained and updated, and that they meet the required standards and certifications34. References:

SaaS and the Shared Security Model

A Guide to SaaS Shared Responsibility Model

The Shared Responsibility Model for Security in The Cloud (IaaS, PaaS & SaaS)

Shared responsibility in the cloud

Authorization is the component of the AAA (Authentication, Authorization, and Accounting) framework that regulates user access and permissions to resources after identity has been verified. It determines what actions or resources a user is allowed to access.

Cortex XSOAR Threat Intelligence Management (TIM) is a platform that enables security teams to manage the lifecycle of threat intelligence, from aggregation to action. One of the key features of Cortex XSOAR TIM is that it automates the ingestion and aggregation of indicators from various sources, such as threat feeds, open-source intelligence, internal data, and third-party integrations 1. Indicators are pieces of information that can be used to identify malicious activity, such as IP addresses, domains, URLs, hashes, etc. By automating the ingestion and aggregation of indicators, Cortex XSOAR TIM reduces the manual effort and time required to collect, validate, and prioritize threat data. It also enables analysts to have a unified view of the global threat landscape and the impact of threats on their network 1. References: 1: Threat Intelligence Management - Palo Alto Networks 2

The basic DNS record types are as follows:

● A (IPv4) or AAAA (IPv6) (Address): Maps a domain or subdomain to an IP address or

multiple IP addresses

● CNAME (Canonical Name): Maps a domain or subdomain to another hostname

● MX (Mail Exchanger): Specifies the hostname or hostnames of email servers for a domain

● PTR (Pointer): Points to a CNAME; commonly used for reverse DNS lookups that map an

IP address to a host in a domain or subdomain

● SOA (Start of Authority): Specifies authoritative information about a DNS zone such as

primary name server, email address of the domain administrator, and domain serial

number

● NS (Name Server): The NS record specifies aan authoritative name server for a given host.

● TXT (Text): Stores text-based information

In a host-based architecture, the server (host) handles all processing tasks, while the client mainly provides input/output. This centralizes control, processing, and data storage on the server, reducing the client’s role to that of a terminal.