it pptttttt - copy

8/13/2019 It Pptttttt - Copy

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Confidentiality

Integrity

Availability

Authenticity

Non-repudiation


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ADWARE


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Adware is software that displays

advertisements on your computer.

It becomes a problem if it:

- installs itself

- hijacks your web browser and gathersdata on your web browsing

difficult to uninstall connection

slow down your pc and internet connection


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Backdoor Trojans


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BLUEJACKING


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Blue jacking is sending anonymous,

unwanted messages to other users with

Bluetooth-enabled mobile phones or

laptops.

Blue jacking is essentially harmless


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BLUESNARFING

Bluesnarfing is the theft of data from aBluetooth phone.

Bluesnarfing depends on the ability ofBluetooth-enabled devices to detect andcontact others nearby

mobile phones serial number can also bedownloaded and used to clone thephone.


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Create copies of themselves

Spread via internet

Use communication between computers to spread.


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PAGE-JACKING

Replicas of reputable web pages

Offensive materials

Reduces websites revenue

Search engines less useful.

Used in phishing attacks.


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Use of bogus emails and websites to trick you into supplying

confidential or personal information.


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BROWSER HIJACKERS

Redirect computer users to bogus websites to deploy the

computer malware.

Default home and search pages changes

Changes browser settings without users permission.


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CRYPTOGRAPHY


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Components

Sender

Encryption

Receiver

Decryption


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key

A number or a set of

numbers

150 ,300 or more

Cipher operates on it

Symmetric keySame secret key

symmetric keySender: public key

Receiver: private key


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Message uthenticity

Digital Signature

electronic Non - repudiation


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Characteristics

Inclusion

Verification

Relationship

Duplicity


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Captcha"Automated Turing Tests"

graphic images

deciphered by people

Create an account


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FIREW LLDevice between

internal network and

internet

Forward & filter packets


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Packet ilter irewall Proxy irewall

Based onsource,

destination address

Uses filtering table to

decide which packets

must be discarded.

Filter message based on

information inside

A proxy computer

between client &

corporation computer


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Anti Virus

Software

Protect computer against viruses

Keeps your computer healthy

Update your antivirus software regularly


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How Antivirus software works

Code characteristic of the virus

Blocks the execution of code and alerts the user

Virus is then isolated and destroyed

Regularly update your antivirus

Automatic update set it and forget it


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Top anti viruses

Shield deluxeAntivirus protection

Trend micro antivirus internet security

Bit defender antivirus Norton antivirus

McAfee virus scan

Zone Alarm antivirus Kaspersky Antivirus


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Steps to help remove a virus

Visit Microsoft update and install the latest

updates.

Update your software and perform a thorough

scan of your system.

Download, install and run the malicious

software removal tool.


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References

Data Communications and Networking ;

Behrouz A. Forousan

www.whatsthelatest.net

www.itsecurity.com

www.searchsecurity.techtarget.com

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