Typically, a victim receives a
message that appears to have been sent by a known contact or organization
. The attack is then carried out either through a malicious file attachment, or through links connecting to malicious websites.
What is a characteristics of a computer worm?
A computer worm is a
type of malware that spreads copies of itself from computer to computer
. A worm can replicate itself without any human interaction, and it does not need to attach itself to a software program in order to cause damage.
What is a part of the network that is used for servers which are accessible by both internal and external users?
DMZs
are also known as perimeter networks or screened subnetworks. Any service provided to users on the public internet should be placed in the DMZ network. External-facing servers, resources and services are usually located there.
A denial-of-service (DoS) attack
occurs when legitimate users are unable to access information systems, devices, or other network resources due to the actions of a malicious cyber threat actor.
What kind of attack tries to overload devices and network links with useless data?
Distributed denial of service (DDoS) attacks
are a type of cyberattack where the goal of the attacker is to render a target network or service unusable. In many DDoS attacks, the attacker uses a large network of malware-compromised machines to overload a network with access requests.
What are worms typically known for?
Computer worms are among the most common types of
malware
. They spread over computer networks by exploiting operating system vulnerabilities. Worms typically cause harm to their host networks by consuming bandwidth and overloading web servers. Computer worms can also contain “payloads” that damage host computers.
What is worms and its types?
Types of worms are as follows:
Email Worms
: Email Worms spread through malicious email as an attachment or a link of a malicious website. Instant Messaging Worms: Instant Messaging Worms spread by sending links to the contact list of instant messaging applications such as Messenger, WhatsApp, Skype, etc.
Why is a bastion host the system most likely to be attacked?
The reason is simple: the bastion host is the machine most likely to be attacked
because it’s the machine most accessible to the outside world
. It’s also the machine from which attacks against your internal systems are most likely to come because the outside world probably can’t talk to your internal systems directly.
Are DMZ still used?
While most organizations no longer need a DMZ to protect themselves from the outside world, the concept of separating valuable digital goodies from the rest of your network is still a potent security strategy. If you apply the DMZ mechanism on an entirely internal basis,
then there are still use cases that makes sense
.
What is the primary purpose of a DMZ?
The goal of a DMZ is
to add an extra layer of security to an organization’s local area network
. A protected and monitored network node that faces outside the internal network can access what is exposed in the DMZ, while the rest of the organization’s network is safe behind a firewall.
Which is not a sufficient way to protect your identity?
Which is NOT a sufficient way to protect your identity?
Use a common password for all your system and application logons
.
Which represents a security best practice?
Which represents a security best practice when using social networking?
Understanding and using available privacy settings
.
What type of program installs and gathers personal information including password and account information from a computer without permission or know?
What type of program installs and gathers personal information, including password and account information, from a computer without permission or knowledge of the user? Answers Explanation & Hints: An unauthorized program that gathers personal information from a computer is known as
spyware
.
What are the tools for flooding attack?
- LOIC (Low Orbit ION cannon) Open source DDoS tool which can easily perform TCP, UDP and HTTP DoS attacks. …
- HOIC (High Orbit ION cannon) …
- RUDY. …
- Slowloris. …
- HTTP Unbearable Load King (HULK) …
- XOIC. …
- DDoSIM (DDoS Simulator) …
- PyLoris.
Is denial of service attack a malware?
DDoS is a
malicious network attack
in which hackers overwhelm a website or service with false web traffic or requests from numerous enslaved Internet-connected devices.
What is the weakness of a denial of service attack?
A SYN flood DDoS attack exploits a known weakness in the TCP connection sequence (
the “three-way handshake
”), wherein a SYN request to initiate a TCP connection with a host must be answered by a SYN-ACK response from that host, and then confirmed by an ACK response from the requester.
