• Samiksha Yadav
• Digvijaysingh Ghongde
• Shivansh Rawat
• Krushna Ramgude
• Prof. Anand Bhosle

: Now today’s entire world has we’ve an inclination to many issues in internet security and privacy. Analysis survey discusses regarding privacy and security relies on the use of internet in motion, ECommerce data processor, social media, banking, study etc. Existing system together generally faces the problems with the privacy of the entire network system and keep personal information. to beat these issues, increase wide used application and information complexity, therefore web services have vogue to a multitiered system whereby the web server runs the appliance frontend logic and information is retrieve to a information or data processor. Intrusion detection system plays a key role in laptop computer security technique to analysis the data on the server. This downside overcome in planned Duel Security technique is introduced supported ecommerce application. For information security we’ve an inclination to use the message digest rule, associate in designed web server of windows platform, with information My SQL Server. Throughout this paper planned system looking at every web request and information requests. Most of the people do their dealings through web based server use. For that purpose duel security system is used. The duel security system is used to identify forestall attacks exploitation Intrusion detection system. Duel security prevents attacks and prevents user account information from unauthorized amendment from his/her account.

Duel security, MD formula, Intrusion detection, multitier internet application, information outflow detection.

"DETECTION AND PREVENTION OF DATA MODIFICATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 6, page no.c107-c111, June-2021, Available :http://www.jetir.org/papers/JETIR2106284.pdf

"DETECTION AND PREVENTION OF DATA MODIFICATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 6, page no. ppc107-c111, June-2021, Available at : http://www.jetir.org/papers/JETIR2106284.pdf