Easy to understand

1. Detection of phishing websites
Presented by
M.Srikanth

2. Contents
1. Abstract
2. Existing System
3. Proposed system
4. Link Guard Algorithm
5. Conclusion
6. References

3. Abstract
 Phishing is a new type of network attack where the attacker
creates a replica of an existing web page to fool users in to
submitting personal, financial, or password data to what they
think is their service provider’s website .The concept is a end-
host based anti-phishing algorithm, called the Link Guard, by
utilizing the generic characteristics of the hyperlinks in phishing
attacks. The link Guard algorithm is the concept for finding the
phishing emails sent by the phisher to grasp the information of
the end user. Link Guard is based on the careful analysis of the
characteristics of phishing hyperlinks. Each end user is
implemented with Link Guard algorithm. After doing so the end
user recognizes the phishing emails and can avoid responding to
such mails. Since Link Guard is characteristics based it can
detect and prevent not only known phishing attacks but also
unknown ones

5. Existing system
 The existing approaches for anti phishing are:
 Detect and block the phishing Web sites manually in time
 Enhance the security of the web sites at the time of developing
 Block the phishing e-mails by various spam filter soft wares
 Installing online anti-phishing software in user’s computers

6. Proposed system
The following are the activities can be performed
in the proposed system:
 Classification of the hyperlinks
 Using LINK GUARD ALGORITHM for finding the phishing e-mails
 Creating LINK GUARD IMPLEMENTED CLIENT

7. Link guard algorithm
Comm: This collects the information of the
input process, and sends these related
Information’s to the Analyzer.
Database: Store the white list, blacklist, and the
user input URLs.
Analyzer: It is the key component of Link
Guard, which implements the Link Guard
Algorithm; it uses data provided by Comm and
Database, and sends the results to the Alert and
Logger modules.
Alerter: When receiving warning messages
from Analyzer, it shows the related information
to alert the users and send back the reactions of
the user back to the Analyzer.
Logger: Archive the history information, such
as user events, alert information, for future use.

8. Advantages and real time
applications examples
 Email systems
 Notification systems

10. TECHNICAL
ARCHITECTURE

11. register
login
compose mail
send mail
user
receive mail
USE CASE DIAGRAM FOR
USER

12. USE CASE DIAGRAM FOR
PHISHING SYSTEM

13. Use case diagram

14. CLASS DIAGRAM

15. Activity Diagram for Mail System

16. Activity Diagram for compose,send
and receive mail

17. Sequence diagram for compose, send
and receive mail

18. Sequence diagram for link guard
algorithm

19. Conclusion
 At present generation attackers are more in networks,
phishing has become major security problem, causing many
losses by hacking he legal data that are used by the user.
 Phishers set their own fake websites which exactly looks like
the original website including applying DNS server
name,setting up web server and creating web pages similar
to destination website.
 So in this paper we had designed link guard algorithm which
is a character based.
 It had detected many attackers by using APWG(anti phishing
working group). Link guard is implemented for all OS, it can
detect upto 96% of unknown phishing attacks.
 Link guard is used for detecting the phishing attacks and
also malicious links in web pages.

20. References
 Link guard algorithm working
 M.Madhuri,K.Yeseswini,U.VidyaSagar “Intelligent Phishing
Website Detection and Prevention System by Using Link Guard
Algorithm” ISSN:2231-1882, Volume-2,Issue-2,2013
 V. Suganya “ A Review on Phishing Attacks and Various Anti
Phishing Techniques” ISSN 0975 – 8887 (Online) Volume 139
– No.1, April 2016