Elance Antispam and Antivirus Test Answers 2015

Elance Antispam and Antivirus Test Answers 2015

Where might a spammer get your personal information from?
All of these

Which of the following spam filtering techniques has the highest potential for generating false positives?
Community Filtering
Bayesian Filtering
Challenge-Response Filtering
Keyword Filtering

Why shouldn't a user click unsubscribe links from spam messages?
clicking the link will prevent
unsubscribing makes finding the sender difficult
the click may validate the email address

What is an example of a Phishing scam?
An application that looks useful, but actually contains spyware to slow down your computer
An email that appears to be legitimate, but is really being used to obtain personal or important information
Hacking into a computer and leaving false trails on who did it
Installing a virus and then asking you to pay to remove it

Malware is short for
Malicious Software
Malicious Systems
Maliant Software
Maliant Systems

What is a good method for a website owner to confirm a user is not using an account for a spamming purposes?
Users must associate a phone to their account and confirm a number sent to them via text
Requiring users provide valid personal information during sign up
All of these
Users that register must click on a confirmation link to the email they specify in their profile

A virus is a program that attaches itself to (or replaces the contents of) which of the following file types?
Text files
Header files
Source files

In order for antivirus programs to be most effective, it is necessary to keep which of the following up to date?
Web browsers
File hashes
Antivirus encryption keys
Virus definition files

Which of the following is not a well known anti-virus program?

What is a captcha?
A spam email that attempts to "capture" information and then use that information to cause damage; the second phase is often referred to as the "gotcha" phase.
An SPAM email written in all caps
It is a tool websites often use to prevent automated spammer bots from posting or registering on a website by forcing the user to do a task, often entering in letters or numbers based on a picture or audio, which verifies that they are human.
A group of characters in hidden in an email that often includes code used in malware.

What are types of malware?
All of these

What could be a good indicator of a Spam email?
Something that sounds too good to be true
All of these
An email that contains plenty of grammar mistakes
An email sent to a bunch of random people

In order to infect a system, clicking an email attachment must cause which of the following conditions to occur?
the attachment is saved to the disk
the attachment is decompressed
the attachment opens in a preview editor
the attachment executes

If you cannot delete malware infected file, what is good method to try first?
Reformat then attempt to delete the file
Run Windows Repair
Run Windows Restore
Boot in Windows safe mode and attempt to delete the file

Which of these is an example of a possible victim in a phishing attack?
The website that was hacked
The person who had their identity stolen
All of these
The bank of the victim

What is a keylogger?
Software that that records keys you set when encrypting files
Software that records keystrokes made on a keyboard
Software used to log all attempts to access a certain file
Software that steals passwords or "keys" that you have saved on your computer

A virus can spread to another computer by
Sharing an infected file with another computer
Through touch
Pinging other computers from the infected computer
Being on the same network as that computer

Automated spamming tools subscribe to mail lists in order to complete which of the following tasks?
collect email addresses
deny service to mail list recipients
introduce security holes into the list

What is a computer virus?
Software that steals files from your computer and is used by blackmailers
Spyware that slows down a computer by sending statistics to an unknown source
A type of malware that replicates itself and spreads to other files and/or computers.
A software that hijacks your computer and asks you to pay in order for it to be removed

Which of these techniques would be effective in helping to prevent phishing attacks by scammers?
Allow XSS
Scan for and fix XSS issues
Use Pop-ups

What run command can you use to check what programs load on startup?

A client asks you to fix his computer because it has ransomware on it. He says he sees a message as soon as he loads windows, and cannot do anything else. What is the best way to fix this computer without losing any of his data?
Reinstall Windows
Reformat the computer
Boot from a USB drive and run a program to remove the malware
Use Windows Restore

What is a botnet?
Software that automates networks
A program that sends emails repeatedly infecting other computers who open it
A collection of malware stored in a network
A collection of computers working together to perform a single task. These computers are often penetrated by software containing malware.

What is rogue security software?
Security software that has been compromised to not pick up certain threats
Security software that is no longer being used for the purpose that was intended due to an exploit or hacker.
A fraudulent security program that appears to be helpful, but is actually not. It may deceive or mislead users into paying money to remove fake viruses or introduce malware after it is installed.
Security software that considers data files or programs as viruses, when they are not.

What is an example of a "419" Scam
Someone who uses social engineering to gain access to your computer or personal information
Someone who sends you an email in hopes you open an attachment which contains a virus
When you download a program that appears harmless, but it actually installs spyware on your computer
A con in which someone asks you for assistance in retrieving a vast sum of money. Often it involves you helping him or her pay off certain fees and in return they promise to share the money with you.

What is the main difference between spyware and other malware?
There is no difference
Spyware that slows down a computer by sending statistics to an unknown source, while malware only includes threats from inside your own computer
Malware monitors data usage, while spyware infects your computer with viruses
Spyware tends to steal or monitor data and/or personal information while malware encompasses all software that may been made with malicious intent in mind

What is a backdoor?
A vulnerability in software that allows someone to bypass the normal authentication process
It is a known bug or exploit hackers use to cause software to behave in a way that was not intended by the manufacturer
It is where viruses store their source code and begin to replicate
It is a way for spyware to leave a system without any trace of it being there

Which of the following sites provide services for users to setup disposable emails?

Virus infection via email attachments can be minimized using which of the following?
Opening attachments from external hard drives
Copying attachments to special directories before opening them
Right clicking attachments
Deleting mail containing attachments from unknown senders

What is an example of a captcha?
An interactive program which have instructions that read: "Move the triangle into the circle"
1 + 1 = ?
What are the characters in this picture?
All of these

You have been told by several of your friends you have recently sent SPAM emails to them, what could be the cause of this and what should you do?
A spammer may have infiltrated your email provider's host and compromised your account. You should notify your email provider.
A spammer or bot may have gained access to your email account and sent out SPAM to all of your contacts. You should change your password immediately.
A spammer has gained access to your email. Unfortunately, the only thing you can do to prevent further SPAM is to close your account and create a new email address.
A spammer is spoofing your email address. You should tell your friends to block the email address.

Which is not an example of an anti-spyware tool?
Windows Defender

Which of the following spam filtering issues stops valid messages from being delivered?
false positives
false negatives

Which is most likely something that could be considered strange account activity and may require further scrutiny on an e-commerce site?
A user logs in from another computer than the last login
A user changes their email
Orders from several user accounts are being sent to the same physical address
A user changes their more than once password

Why are disposable email addresses useful?
It is useful for someone who needs to give out their email or sign up to a website, but wants to protect their real email address from SPAM.
It is useful for spammers to create false email addresses that does not exist in order to spoof the from email in their spam messsages.
It is useful for spammers who want to send out a one time mass email, but never use that same email address again
It is useful for people who do not want their emails to be read

What is ransomware?
A nickname for types of spyware that require a password on boot
Software that steals files from your computer and is used by blackmailers
A software that hijacks your computer and asks you to pay in order for it to be removed
Viruses that infect files and won't let you open them unless you know a certain pass code

What is disposable email addressing?
A practice in which a spammer sends out mass emails from a single email account, but never logs into that account again.
Email addresses that are not rea, but they appear on the from section of an email. They are often used to help protect spammer's from being traced.
Someone who creates an email for the sole purpose of sending out spam
A practice in which you set a unique email address for sender/recipient communication. Disposable email addresses typically forward to one or more real email mailboxes where the owner can receive and read messages without revealing their true email.

When a spammer forges the sender's address and enters an invalid receiver, which of the following settings will cause the receiving mail server to create backscatter?
Reject messages
Drop messages
Bounce messages

In order to help prevent spam, a honeypot performs which of the following functions?
acts as a desirable mail server in order to lure spammers
delivers suspected spam messages more slowly
traps suspected spam messages
routes suspected spam to special enclaves in the system

Which of the following techniques requires posting an email address where only spammers would find it?
Spam Traps

Antivirus programs hash files on a computer in order to detect which of the following activities?
File size changes
File permissions changes
File content changes

Performing outbound spam filtering does which of the following for an organization?
helps prevent whitelisting
helps prevent blacklisting
helps prevent spam trapping

What is CryptoLocker?
A module of the Windows BitLocker encryption system.
A type of encrypted Linux file system.
A type of ransomware which encrypts user files and demands payment for the decryption key.
A malware class which is known for encrypting itself to avoid detection.

Which type of analysis is an antivirus program performing when it observes a file's activities in a sandbox or decompiles a file and analyzes its instructions?
Performance Analysis
Heuristic Analysis
Signature Analysis

Which of the following tools would NOT be useful in figuring out what spyware or viruses could be installed on a client's computer?
Malware Bytes

How can delivering mail as text instead of html help prevent spam?
text mail prevents web bugs from alerting spammer that the message was opened
mail servers won't accept html messages if they are in text mode
text is easier to analyze for spammer information

What is email spoofing?
Copying or forwarding emails and then editing their To and From to make it appear that the email was originally sent to or from someone else
When someone forges or makes it appear that a email being sent is from a particular sender when it really is being sent by someone else.
When someone sends an email that appears to look like a legitimate, but it is actually not and is being used to obtain personal or important information.
Sending an email through multiple accounts in order to make it difficult to trace back the original email's sender address or origin

Which of the following reduces spam by rejecting mail from a specific ip addresses?
URL Blacklisting
DNS Blacklisting
IMAP Blacklisting
POP3 Blacklisting

Antivirus signatures are constructed using with of the following?
Encryption Algorithms
Random Number Generators
Cyclic Redundancy Checks

How can you help stop spam?
All of these
Block certain email addresses known for sending spam
Setup email filters based on keywords known to be in spam
Unsubscribe from listservs

Which of the following characteristics classify a mail message as spam?
it is solicited and indiscriminately addressed
it is unsolicited and indiscriminately addressed
it is solicited and contains advertising
it is unsolicited and contains advertising

Which of the following is true of macro viruses?
They depend on the operating system to propagate
They are larger than traditional viruses
They depend on applications to propagate
They are written in low-level languages to avoid detection

Which of the following can prevent virus infections?
Implementing a firewall
Implementing an intrusion detection system
Patching programs and the operating system

In a compromised system, which of the following provides the safest way to analyze it?
Resident Antivirus Program
Live USB

Is commercial SPAM legal in the United States?
Yes because it is protected under the first amendment
Yes, but only if it is an advertisement for a real product.
Yes, but only if it follows the standards listed in the CAN-SPAM Act of 2003

Which of the following differentiates a virus from a worm?
a worm requires user interaction to infect a machine
a worm can infect multiple machines
a virus requires user interaction to infect a machine
a virus can only infect a single machine

Which of the following spam filtering techniques statistically analyzes mail?
Keyword Filtering
Challenge-Response Filtering
Community Filtering
Bayesian Filtering

Firewalls help to prevent which of the following malware from propagating?
Encrypted viruses
Polymorphic viruses
Trojan viruses

On a WordPress site, which is the default service/tool to prevent spammers from posting comments?
Website Inspector
MailWasher Pro

What is the difference between a worm and virus?
A worm does not replicate itself like a virus does, but rather moves from computer to computer
A virus infects files, while a worm eats them
A worm is a virus created for a very specific purpose
Unlike a virus, a worm does not need to attach itself to a program to spread.

Which of the following best describes a distributed antivirus tool that consist of a scanning client and a corresponding web service?
Client/Server Antivirus
Internet OS Antivirus
Cloud Antivirus
Web Antivirus

Most spyware is used to...
track a user's movement on the web or display pop-up ads
steal sensitive information on a computer in order to blackmail you
slow down computers for the sole purpose of maliciousness
create a backdoor

Polymorphic viruses randomly generate which of the following items before infecting a new file?
mutation engine
virus body
decryption routine

A virus can hide itself from an antivirus software by doing which of the following?
intercepting operating system read and write requests
replacing an executable file with its payload
appending itself to an executable file
compressing itself in a zip file

Which of the following is true of a trojan virus?
a trojan reproduces by infecting other files
a Trojan doesn't self-replicate
a trojan inserts a copy of itself into another program

Which of the following sites use disposable email addressing?
All of these

When using greylist filtering, a message will be considered legitimate if it does which of the following?
contains a sender and subject line
is not a multipart message
sends its message more than once
sends its message without html markup

Which is not an example of a real life virus or worm discovered during the time period of 1980 to 2013?
Elk Cloner
The Michelangelo Virus

In order to help prevent spam, a tarpit performs which of the following functions?
traps suspected spam messages
routes suspected spam to special enclaves in the system
acts as a desirable mail server in order to lure spammers
delivers suspected spam messages more slowly